Hi Dave enjoyed your commentary on your early times regarding work experiences and leaving devices powered on. Back in the mid 70’s I served in the Air Force as a radio repair and I too was instructed to not turn off much of our equipment. Still today at home I leave some equipment running for the same reasons
Hi Dave, thanks for another great video!!, great short backstory of past years of working in the electronics field, especially with the station engineers !
Engineer ended my tv career before it got going by when i used the station as a reference he said i shouldn't be left around equipment without supervision as i would take it apart. Well not in so many works but he said my zeast for learning about the equipment had annoyed the technical staff. A knife is the back basically. If anyone knows how film, tv, radio and recording business goes. They put you on the black list and nobody will hire you. I figured out why my boss at the time always got me to unjam a tape or to flip open the side of the camera and reseat the boards that had worked their way loose. I was eager to please but all he was doing was covering his own ass and when the fit hit the shan he could deny any knowledge and leave me hanging. That's exactly what he did. Fresh out of college and a permanent black mark as far as broadcast. Probably for the better. 2 guys that interned with me went on to be cameramen at ckvu tv. Both dead by 40 from brain tumour. Most likely brought on by exposure to x-ray exposure from monochrome CRT viewfinder. For the skeptics both had tumour right where the exposure would have been. Joe was a studio cameraman and his was in frontal lobe between his eyes. Mark was an eng and his was on the right side behind his shooting eye. Need any more proof that those high resolution viewfinders were bad. I certainly don't. I spent time behind a camera too but not 40 hours a week. Mine was perhaps 10 hours a month at most.
@@12voltvids Hi Dave, wow !!, that's quite a story !, and a shame that those two guys died from the radiation of the cameras!, also that was crappy of your boss/supervisor to throw you under the bus like that !, but it worked out well, you have a vast knowledge and experience with all sorts of electronic equipment !, I hope you keep doing this for years to come !, and I appreciate your videos, even though I'm in the lower 48 !, take care and enjoy the fall weather !
I'm very grateful to you Dave for mentioning Truth and reconciliation day Thank you. You are certainly one of the best technicians that I've come to appreciate very much. Even though I did not go through the residential school - I'm however am one of the survivors of the Sixty Scoop, that was adopted out to a white family. Bless you David
I have friends that were both part of the 60s scoop and went through residential schools. I have first nation ancestors like many of us. I never met my grandfather but my dad was very dark and had the look even though he never acknowledged it because of all the racism that was Target the gates first Nations people. My dad grew up on a dairy farm that was ultimately swallowed up by Dairyland (that brand was never in the house when i was growing up as they took over the industry dumping cheap milk and forcing all the independent farmers to sell out to them.) My daughter did the dna test and it came back with a tiny sliver indicating native American / Canadian. The rest is Irish Scottish British Norwegian German Dutch.
Really appreciate the time you put in. Try to watch all your videos to try and learn a lot of something in everyone. Wish we were neighbors as my nakamichi 580 tape deck which worked perfectly but sat isle for 6 months now has an issue where the right output sounds clean but the left only playing the lows with a hiss for the highs and mids. Such a bummer on an otherwise great sounding deck.
Hi 12voltvids good to see your professional experience at work. I am new here and I'm sure you have experience with Akai reel to reel tape machines. Some have those terrible pot metal cams but I can get new ones but I am working on a 1730dss a customer brought me and the cams have already been changed but the motor pulley is pot metal and cracked. I can't find one so I ran thin super glue in the cracks and left it to dry for about 24 hours then powered the motor on and filled the high spots with a file. It works great and I think the super glue will hold it together for a very long time. Just thought I'd pass my encounters and remedies to you and others that may can be of help someday
Interesting video. As for always leaving things on...My father was a tv repairman back in the days of vacuum tubes, and he said that people would always say that the set quit when they got home from a vacation after it hadn't been used for a week or more...In addition, The CEO at PS Audio says that they did away with the power switches on many of their amps so that they are always on. They claim that the amps just sound better when always powered, and it cuts back the failure rate of components.
That is absolutely 100% correct. My icom ham radio the one I fixed the display on last year it's never turned off. When I went on holidays for a week somehow I didn't notice that the power supply had been turned off. When I came back and turned the radio on my display is all white again radio works display has gone bad a game I'm going to have to take it apart and see if I can fix the head unit. Equipment does last longer if it's left running. That's why television stations never shut their equipment off unless it's being transported from one location to another. Radio stations are the same everything is kept turned on and running 24 hours a day. I have several pieces of equipment here that I never turn off my security camera monitors for one. One LCD said I used to turn on and off all the time and that's the one that the fluorescent backlights failed on another identical set has never been turned off and it's been going for at least 20 years I'm looking at one right now that's never been turned off, as of right now that monitor has 66,535 hours and it's still going strong. Nine times out of 10 when the switching power supply is going to fail it's after it's been running for a while like years and you get a power failure and the capacitor is cool down then when you go to turn it back on they won't start nine times out of 10 that's when they're going to fail. the only reason I turn everything off now and I'm not using it because I'm tired of paying through the nose for my electric bill because electricity is gone up quite a bit over the years and it keeps going up so I shut stuff off when I'm not using it just to conserve energy but I know that it is going to shorten the life of the product and require more maintenance
Fantastic amp. I'm happy to own one. I have sourced spare transistors and tubes just in case. This amp has great sound and is very punchy, very hi dynamics. I have only one problem and that is the switches. Like this one I see. As I have also a Quad 405 I should use the time to clean it up but have other things to do also...
@@12voltvids Yes, This amp was left in an appartment dat some one rented from me. For him it was just an oversized paperweight. I'm happy with that line of thought of him. Apart from cleaning the swithches there was realy nothing wrong. This was around 15 years back. If some one has more of those paperweights I'm in.
Hi Dave thanks for another informative video. My 2 cents to add here would be regarding pots and switches that are sealed would be to penetrate the plastic type using a hot poker as to not have any shavings go into the device
I ran into something interesting with my old 1980's Harmon Kardon stereo. If you are touching the ground of the output cable from a cassette deck or turntable and the chassis of the stereo as you are connecting the two, you would get a small bite from it. I determined that if you put the power cable in one way, you would have power between the two with the amp off. If you put the power cord in the other way, you would see power with the amp on. I wired in the polarized cord such that the power between the two would only show up when the power was on. I reasoned that I was less likely to be changing the connections if the amp was on. It has been too long since I looked at it but I vaguely remember there were two capacitors going to ground, possibly one on each leg of the power line? Don't remember. I think I did check the voltage between the power outlet ground and the stereo and got the same results.
Generally the neutral side is coupled to the chassis using a ceramic disc cap. It's done to decouple any RF that might get picked up by the cabinet and shouldn't transfer more than a few microamps if it's if the power cord is reversed. You're not going to get a shock from it but you can certainly feel it if your hands are wet you might feel it or a little more. The leakage would be in microamps anyway but that's why we have polarized cords so that they're all on the neutral side as long as they're plugged into the same power stripper or outlet you shouldn't have a problem but if you got them plugged into different outlets there could be a slight potential difference on the neutral. There shouldn't be but quite often there is if they're going to different breakers in the panel. All depends on what other devices may be on that other leg. For example if you had something to do a lot of current such as an electric heater plugged in it's drawing a thousand Watts well that 1,000 watts is returning on the neutral line so if you're plugged into a parallel output on the same circuit that there's a big load on that neutral might be a couple volts above ground potential normally your neutral is bonded to ground back at the main panel but it can float a bit if you're drawing a heavy load because that's how it works your wine power goes through the device and comes back on the neutral so a high current resistive load for example will cause the neutral to raise up a bit could be as high as a couple volts depending on the length of the wire and how far you are from where it's grounded at the panel
I like the fact that you can put to caps in series to double the voltage rating but when in parallel the V rating stays the same. Using 4 caps 2 pairs both in parallel and then put those 2 separate pairs in series will double the rating for voltage and the capacitance.
that voltage leakage is interesting. i think i have that with my laptop sometimes. every once in a while i'll feel a buzz or very slight static tingle sensation when i touch the metal case, but it only does it once in a while. i'll have to pay attention if i have a certain thing plugged into it when it happens
In Finland if you work on holiday (like i often do) you get +100% pay. Like christmas eve for example, i'm always at work and instead of normal 11€/h i get 22€/h. same thing applies for regural sundays
Yes we get double time and half. In other words triple time. For me that's about 125 an hour but taxes take a very big chunk of that. I enjoy the time off myself. I guess if i was paying a mortgage or loan I would be more eager to work those days but i don't have those expenses. Everything been paid off for years.
Dave, speaking of inrush current, I have a great soundcraftman power amplifier, rated at 400 watts rms @ 4 ohms, and when I turn it on, can hear the power surge in the transformer and filter caps !, can you suggest a soft start/speaker protection circuit that I can build to install in this amp ?, I use it as my test amp on the repair bench, thanks for any help you can give!
Well done on a relatively painless resurrection of a quality amp (you know you have something of quality when you see pre-heat and protection which works properly, saving complete chains of transistors etc from blowing). Curious as to whether you have ever seen any issues with old adhesive seeping under caps, causing conductivity between the pins.
Yeah I guess it's possible but that adhesive generally didn't flow that well. it was kind of like contacts met when it was put on so it didn't generally migrate too far under the parts it usually stuck around the seams. the big problem with it when they applied it no one ever figured it was going to after 40 years become slightly conductive so they poured it all over wires and jumpers and stuff and it's fine until it breaks down and then it starts to become slightly conductive. If it's in the critical area like the bias circuit it can certainly cause an apple fire to go out of bias. we're sitting in this apple fire it really wouldn't cause that much problem because it's basically just on the B+ and the B minus rails and the amount of leakage that's going to go through it is miniscule like we're not talking in the ohms we're talking in the mega overages so it's not going to have much of an effect on it other than possibly inducing a little bit of noise as the current mitigate to cross the glue could sound like a noisy resistor such a good idea to scrape it off wherever you can just to prevent problems. As it was drinking down and also released a corrosive compound which could attack smaller wires and I've seen it where it's been placed over is that or diodes for example and it's corroded the need away to the point where it's failed. It was nasty stuff and when you see it it's a good idea to try to remove what you can at least break the path between conductors so that you can't get the leakage farming across it.
Hello I have same amp with 50hz humming at idle mostly at minimum volume pot position and other artifacts like smps sound from tv output .all switches are removed for good .there are new pots .Any advice where I can look for the problem ?Thank you !
So, the LEDs inside of the unit are just for a quick visual that the electrons are flowing as they should? I have a version 1 of the Rega Elicit integrated amp that has the same thing going on inside.
They are part of the bias. When the respective tubes for that channel kicks in the led will light up. So if a tube goes dead the corresponding led will be out. Also if some other component fails in that channel it will be out. All amps should be designed this way.
@@12voltvids OK, good to know. The Elicit is not a tube amp, but I'm sure it's the same concept for solid state amps. When an LED is out, then I know that something is wrong in there. Thanks
@@JerryPemberton that's right a lot of different amplifiers have green or red LEDs to indicate that they're working. It's just a simple cheap way to show that that particular circuit has got its power. They typically put one for the positive rail and one for the negative rail which will give you a quick visual that the amplifiers are receiving its power from the power supply so for example if you're in a no sound condition and you look at The amp and you see that the two LEDs indicating negative rail is missing then you know where to look.
They have a very tube like sound. Oh wait a second.... One of the best sounding amps I have had the pleasure of listening to was a PS audio hybrid. It used a 12ax7 buffer to drive a class D module and it sounded fantastic.
@@srtamplification if you listened to a good one and someone didn't tell you it was class D you would never know. I and a bunch of others did a blind listening test a few years back. Every last one of us thought we could pick the best sounding amp and after the demo was done and everyone voted for the most transparent best sounding amplifier everyone had to pick their jaw up off the floor. The class D was a qsc BTW and it was simply amazing. I used to have the same mind set about class D. No more they have come a long way. It's the theory if operation that has everyone thinking they are no good. Early units that used low carrier frequency were really only good for subs but the switching frequency is now around 1200khz.
That's true too heat and cool cycles cause solder joints to fail due to expansion of dissimilar metals. With incandescent light bulbs if you run them up slowly and only go to about 90% they will last literally forever. I have some decorator lamps in a grandfather clock that are operating at reduced brightness about 50% that are at least 15 years old and going strong.
Hey had a question. I’ve gone through about 10-11 older used CRT sets this year alone for gaming. Every single one had some degree of convergence separation of the red lines from the white lines. Is this something to expect with any CRT and what typically causes it, just age and wear? The set I’m currently using for gaming is a 19” low-end 1997 Magnanox (RF out only set) and the convergence is looking pretty rough. I fear if I just go chasing the CRT dragon for the perfect picture, I’ll waste money and heartbreak seeing more of the same convergence flaws.
Here's the thing about CRTs you're never going to have a perfect picture. Never! The only way you're ever going to get an absolutely perfect picture is if you build yourself a completely magnetically shielded enclosure and sit in that enclosure. This rock that we sit on is a giant magnet and the magnetic field from the earth will influence all CRTs you can get the pretty good in the middle but as you get out to the edges it becomes more problematic and television is used a circuit referred to as dynamic convergence to try to compensate for this the problem is dynamic convergence works using a lot of capacitors and coils and as they get older the value start to shift which will cause them to drift. Even if you change all the parts and you get it good now 6 months from now it's not going to be perfect that's just the way that it is. I was ready to hang myself with one customer I had that was so frustrating. Brand new Sony Trinitron big one this is going back to the late 90s. This guy was an engineer and they're always the worst and he was German that made it 10 times worse. This guy buys a new TV takes it home sets it up and gets out his protractor I've been calls and it's not right I spend hours trying to get it to his satisfaction on a brand new TV it is house I can't get it to a satisfaction I get it looking good he measures it agrees everything's good I put the back on it I turn it around and put it back in the corner he's not happy. Finally after wasting probably 10 or 12 hours, unpaid time I should say I told him there was nothing more I could do and that he really should be paying me for my time. His attitude was well you have to bill Sony. I tell him I did build Sony they paid $85 for the service call that covered the first hour I've been at your place 4 hours on two separate occasions because it's not good enough for you who's going to pay me for all those extra hours because I'm not paid by the hour I'm paid by the job and every hour I waste trying to make your TV to your acceptable standards is an hour that I'm not getting paid I finally walked out and I left it horrible by his standards. The guy comes down screaming at the boss the boss is screaming at me and I said to my boss why don't you go up to his house and see if you can do it any better. About 2 weeks later I see the TV back in the showroom the shop is giving him a refund and told him never come back. We lost our shirt on that one and my boss at the time all he said is you lost a few hours and I lost hundreds of dollars because now I can't sell this TV as a new set and that was his attitude. The guy I work for was a piece of work and that's why I left, or one of the reasons I left. But to answer your question you never going to get it looking good even when they were new they were not perfect especially in the corners you can get them close but you never going to get it perfect. you got to stick little magnets on the bell of the tube and especially them are modern ones that use static convergence little Chevron magnets go on the bell of the tube and you're going to spend hours and hours and hours trying to get the thing looking good and when you get one quarter looking good it's going to throw something else off that's just the nature of the beast for CRTs. it was even worse with the 16x9 sets they were very difficult to try to get looking perfect you can get them looking pretty good but you're always going to see some convergence or purity errors in the extreme corners.
I made the mistake of dickin around with the convergence rings on the neck and ruined the picture, couldnt get it back so definitely gonna avoid that for other sets
@@Retroflex01 it can be fun all right. There is a procedure to do it. You need to get the purity correct first which is I think that was the innermost pair of rings I forgot it's been so long since I've done it but to do that you need to put up a solid red screen and then you get the purity correct and then once you get the purity correct then it's the other sets of rings that will adjust the convergence but if you don't have the purity correct with a solid red screen and no other color showing but red you'll never get it you'll never get it even close. It's been so long since I've actually done that I haven't done a convergence job on a CRT probably since around 2000 or 2001. Used to change lots of Trinitron tubes back in the '90s when they were all popping like fuses but by 2,000 people were buying flat panels right so when the tube went on their TV they were tossing it out. So I tend to forget the procedure but if you look up the service manual for the model you've got there will be a procedure and it will tell you which which two adjust the purity you start with them all straight up and down pointing at 12:00 and then when you adjust them you typically spread them at an equal amount out and then rotate them and keep them together as you rotate them and there's a procedure if you look in the manual it will tell you how to do it it is involved and it will take a while.
The track is called all about the blues. Performed by the 1972 Langley community band. My cousin was a horn player in the band when he was in high school.
With love & respect….. ….2 grand in 1985 is exactly 5.516.88 dollars today. You strike me as to frugal to spend that. What where you doing back then brother?? I had a bad ass Luxman turntable that I had to let go of as all my local electronics guys where to incompetent to figure out what was wrong.
I was either working at Sony or the shop I was at for 20 years. Frugal? Obviously you haven't seen my setup. As to 5 grand today you are on drugs. One of these would go for a couple hundred. Perhaps 400. Electronics don't go up in price they go down. I never over pay for electronics because i know what they are worth. eBay pricing is not what they are worth. Unfortunately there are suckers born every minute and you know the saying about a fool with his money. I'm not that fool and that's why i have lots of money. I'm still working because i want to, not because i need to. I could retire tomorrow if i wanted to. I don't take expensive vacations because i am just not interested in pissing away money on a vacation. I will drop 50 grand on a new car and not think twice about it because i will have something i can enjoy for 10 years where as that round the world vacation that cost the same is done in a month and nothing to show but pictures. I can see those places on my big tv.
@@12voltvids You and I need to meet as you constantly misconstrue what I say to u. I didn’t call you cheap or broke. Frugal is an admirable thing, it’s something to aspire to. It means not wasting money on bullsh*t! It’s what they teach you in the BoyScouts. To be thrifty & frugal. I agree about Vacations but I have a family. I have dogs & guns so danger is a moot point. I’ve taken my family on amazing cheap vacations. I wouldn’t spend huge money on a Hotel room if I was a billionaire! My local high end store had a McIntosh hybrid tube/solid state that sounded amazing.
@@12voltvids I think your the one on something btw. I didn’t say you payed that much for a used amp from 1985 in 2022. I was obviously adjusting for inflation! 2k US dollars in 1985 is exactly $5.516.88 today! Inflation and FIAT currency will always fuk you over time. We’re lucky the US dollar is still so valuable.
@@ryanjofre I know you didn't. My father in-law was cheap. I'm just tight. I'll spend big bucks on essential things but won't throw it away especially on vintage equipment. It's all out there for next to nothing. I was at a guys house working last week that picked up a sansui 9090db at the side of the road for free and it is currently listed for 3000 looking for a "sucker" with more money then brains.
@@ryanjofre the thing is inflation calculators don't work for electronics as unlike other things electronics have gone down not up. VCRs for example were 2000 for a 2 head top load in 1979. The last new one I bought in 2002 and I paid 79.00 for it. Hi Fi stereo 4 head. In 86 a 20" trinitron stereo tv was 999.85. The last new CRT I bought at Walmart I paid 65.00 for. The first plasma sets we sold were 12,000.00. When i bought my first plasma in 2008 it was 600.00. There was inflation over all those years. Your dollar certainly doesn't have the buying power that it did 30 years ago, just look at housing, groceries and energy but it doesn't apply to electronics. As technology continues to advance the prices continue to drop. Now if you said that house you bought back in the 90s for 100,000 is worth about 1.8 million today I would say you are absolutely 100% correct. That steak that was 10 is now 40. On the other hand when i entered the work force minimum wage was 3.15. It's now over 15.00 an hour.
First chord copyright strike. The eagles and the cars over react. I remember one video I did on am stereo I was using the DJ talking to show the quality and he was talking over the intro of one of these nites. It was picked up. Only 1 bar played and that was enough and it was way down under the dj. I would imagine the beat brothers would be as bad.
Wait, what? Someone said magic smoke, and then the following word was even "scenario?" Where? When? How!?! Don't do this to me like that! hahahaha :) 55:24
On a side note, it is hilarious when you think about it for some moments, how and why the term "magic" smoke came into play. Us tinkerers had it happen and what to tell others? Only one thing of course: Magic! Something like that, but I think my point was portrayed. hahaha
24:00 I hear a lot today how the modern workplace is dominated by vindictive people/SJWs/etc. I have to painfully inform them that it was always that way. All it takes to ruin one young person's career is one asshole like the one you ran into. It's pretty sad. I'm glad you found a new career that you enjoy in your later years.
Chevy volt, a 2012 and 2019. These are plug in extended range ev. In other words the engine never fires as long as there is charge in the battery. Once the battery is down it switches to gas.
@@12voltvids Plug-in hybrids unlike the Bolt. I agree that they are EV if you stay within the limited range. You still have to haul around and maintain the ICE though. Being an electronics guy, do you feel better about working on it if yiu have to?.
@@richardsmith2721 well there's very little maintenance to do on the internal combustion engine because it doesn't run that often. it will come on and go into what's called maintenance mode which will run it for a few minutes every couple months if it hasn't been used it will start up it will run do a full warm-up cycle to lubricate all the parts and heat up the catalytic converter and get everything up to operating temperature and then it shuts off. it also monitors how long the gas has been in the tank and once the gas reaches a birthday it will then tell you that you need to run the engine to burn the gas off and it will run the engine every time until you replenish some fuel. The wife drives the older one and she goes into gas mode a little more than I do because first of all hers is over 11 years old now and the range on the battery is much less because it had a smaller battery. Now as to those that talk about hauling around and engine and unnecessary weight the same can be said for a full EV such as a bolt or a Tesla or any of the other ones. I might be hauling around a couple hundred pounds for a small 4 cylinder engine and a fuel system and so forth which is not that big it's a small gas tank and a small exhaust system so of course that adds a bit of weight but it has less weight than hauling around a battery that weighs 2,000 lb. that's the beauty of the plug-in hybrid and why it's the only vehicle that I would drive if my vote were to get totaled I would be buying another plug-in hybrid unfortunately they no longer make the volt so I would have to go to a different brand probably a Toyota Prius prime or a RAV4 prime or possibly the escape plug-in or even maybe the Jeep plug in but one thing for sure it would be a plug-in hybrid. The reasons for this and there are many is first of all the battery cost. If the battery fails on a Tesla or a bolt or a full EV you're looking around $30,000 to replace the battery if the battery were to fail on a plug-in hybrid a replacement for the volt a rebuilt pack can be had for around 4,000. Another advantage to having a plug-in hybrid is as the battery ages the range gradually reduces. With a plug-in hybrid that's not an issue. For example my old 2012 has 185,000 miles on it now. When it was new it would get around 56 km to a charge that range has dropped now to around 47. Part of that is due to battery aging the other part is due to general motors reprogramming the computer to start the engine when they're still a greater charge remaining. The reason they're doing this is because they don't want the battery voltage dropping too low as the battery ages because if it gets below a certain level the car will lock out. The same is true for all battery only EVS as the battery ages the range is going to be reduced the range is always reduced in cold weather with a plug-in hybrid that's not an issue because the engine is there to start up and it will start immediately as soon as the battery reaches what the computer determines is its minimum state of charge and then it will charge back in the battery to keep the battery from discharging any lower. I've driven hybrids since 2005 my first one was a 2005 Ford escape not a plug-in just a regular hybrid but that vehicle was so reliable it had over 200,000 miles on it when I traded it in and the only reason I traded it in to buy my 2019 volt was because they discontinued the car and I wanted a second one while I can still get a brand new one. The old one which my wife drives on an average and it's only a 35 l tank or 8 1/2 gallons she can go 3 months and on average around 2,000 km between filling the tank. I have topped 12,000 km on one tank of fuel on mine. The reason is the battery is bigger on mine so I have a much greater range about 95 km in the warm weather around 65 when it's below freezing but I have a much greater range because it's a larger battery. now someone said why don't they put a 300 mile range battery on it well that's not necessary that's why you have the backup engine you've got a battery that is big enough for your normal day-to-day driving and then when you need to go further you've got the gas backup. The huge advantage and this is a huge advantage is when I want to travel I do not have to plan my trip around stopping to recharge. Those EV advocates will chime in and say but it's only a 30-minute charge. Okay well when I need to fill up my gas tank it's about 3 minutes to pick up 30 l of fuel. I don't need to sit around and wait for 30 to 40 minutes to get enough charge to get to the next EV charging station and furthermore while I was traveling last Summer I noted the EV drivers waiting in line to get on the two chargers that were at the charging station and it was two or three of them waiting in queue for the next charger therefore they're not stopping for half an hour they're stopping for half an hour once they get on the charger they might have an hour to wait before they even get their turn that's what I'm laughing at these people that want to travel in an EV. The greatest commuter car and a car around town but I wouldn't want to trust one for a road trip, especially driving through the fire season we had last year where roads were closed sometimes for six or seven hours you're stuck on the road when it's 40° Celsius outside you want to be able to use your air conditioner if you're stuck in an EV and no place to charge up you're going to cook. At least I can run my engine to keep my battery charged and keep my air conditioning running which the engine starts and runs for 5 minutes and then shuts off for about 20 with the air conditioning is running so it's not even burning much in the way of fuel. for me and for anybody else that drives a plug-in hybrid we would never go full on EV for the reasons I've stated above.
Some people just don't like anyone learning, it's a pride/greed problem. You don't mind giving us information about all sorts of things, we are not likely to ever be as good as you. I knew about the series capacitors method to make a value, but dosen't it screw up the overall esr value, so for critical circuits it's a no no? Just a silly thought.
Well of course your ESR is going to go up slightly so if the capacitor had 0.02 ear then putting 2 in series would make it .04 so you certainly would not be doing this in a resonance circuit but we're not talking anything with any type of high frequency component. This is 60 hertz filter. Because it's a full wave bridge it's 120 HZ is what is seen. This is not going to have any impact whatsoever on a power supply but you wouldn't do it in a switch mode supply for example. I have done it however in the horizontal sweep circuit in the yolk on old black and white monitors where they used a dog polarized capacitor and one wasn't available so I put two regular capacitors with a negative turbos connected together it worked fine but because the ESR is going to double which did not have any effect on the operation but it certainly had an effect on the life of the capacitor. Sometimes so you have to do things like that if you can't source apart in a reasonable amount of time. What I was fixing monitors for example there are a lot of businesses that would bring their security monitors over. There was a jewelry store right across the parking lot from where the shop was and he had cameras all over the store and a bank of little 9-in monitors City on his desk in the back each hooked up to a VHS VCR. he would sit in the back and watch the monitors whatever there was a customer in the store while his wife ran the business and dealt with the customers. He would just sit in the back making rigs or fixing watches or whatever he did he was a watchmaker so he worked a lot of high-end watches and watch the monitors the entire time people were at the store watching for someone distracting his wife while they were trying to steal something out of the showcase etc. So what one of his monitors went down this was a code 3 emergency as far as he was concerned. He would March it across the parking lot to the store and expected fix within an hour. That was the kind of guy that he was he was paranoid that someone was going to rip him off if one of his monitors was down or camera was down. because he was friends with the older of course I had to drop everything that I was doing and get on this monitor and get it fixed and if I needed a non-polarized cap which I didn't have I had to make do with what I had just so I could get it out the door get it back in service. Sure it might only last two years and then it was back again and I was doing the same thing. But these monitors were left running all day when the store was open.
@@12voltvids He sounded like a right pain in the arse, but it was another job and money for the shop. I wonder if he ever thought about getting a spare monitor, too tight with money i guess. No i would not use series electrolitics in switch mode supplies. Switch modes are picky.
So you still buy that turning equipment on and off is bad for the semiconductors? I had a 70's amp that I had re-capped and biased idling one day and the output section went and threw DC into my sub. Good thing I was in the room with it... I figure most good designs these days have soft start circuits?
Hi Dave enjoyed your commentary on your early times regarding work experiences and leaving devices powered on. Back in the mid 70’s I served in the Air Force as a radio repair and I too was instructed to not turn off much of our equipment. Still today at home I leave some equipment running for the same reasons
Excellent video! A great combination of interesting subject matter, technical info and storytelling.
Hi Dave, thanks for another great video!!, great short backstory of past years of working in the electronics field, especially with the station engineers !
Engineer ended my tv career before it got going by when i used the station as a reference he said i shouldn't be left around equipment without supervision as i would take it apart. Well not in so many works but he said my zeast for learning about the equipment had annoyed the technical staff. A knife is the back basically. If anyone knows how film, tv, radio and recording business goes. They put you on the black list and nobody will hire you. I figured out why my boss at the time always got me to unjam a tape or to flip open the side of the camera and reseat the boards that had worked their way loose. I was eager to please but all he was doing was covering his own ass and when the fit hit the shan he could deny any knowledge and leave me hanging. That's exactly what he did. Fresh out of college and a permanent black mark as far as broadcast. Probably for the better. 2 guys that interned with me went on to be cameramen at ckvu tv. Both dead by 40 from brain tumour. Most likely brought on by exposure to x-ray exposure from monochrome CRT viewfinder. For the skeptics both had tumour right where the exposure would have been. Joe was a studio cameraman and his was in frontal lobe between his eyes. Mark was an eng and his was on the right side behind his shooting eye. Need any more proof that those high resolution viewfinders were bad. I certainly don't. I spent time behind a camera too but not 40 hours a week. Mine was perhaps 10 hours a month at most.
@@12voltvids Hi Dave, wow !!, that's quite a story !, and a shame that those two guys died from the radiation of the cameras!, also that was crappy of your boss/supervisor to throw you under the bus like that !, but it worked out well, you have a vast knowledge and experience with all sorts of electronic equipment !, I hope you keep doing this for years to come !, and I appreciate your videos, even though I'm in the lower 48 !, take care and enjoy the fall weather !
I'm very grateful to you Dave for mentioning Truth and reconciliation day Thank you. You are certainly one of the best technicians that I've come to appreciate very much.
Even though I did not go through the residential school - I'm however am one of the survivors of the Sixty Scoop, that was adopted out to a white family.
Bless you David
I have friends that were both part of the 60s scoop and went through residential schools. I have first nation ancestors like many of us. I never met my grandfather but my dad was very dark and had the look even though he never acknowledged it because of all the racism that was Target the gates first Nations people. My dad grew up on a dairy farm that was ultimately swallowed up by Dairyland (that brand was never in the house when i was growing up as they took over the industry dumping cheap milk and forcing all the independent farmers to sell out to them.)
My daughter did the dna test and it came back with a tiny sliver indicating native American / Canadian. The rest is Irish Scottish British Norwegian German Dutch.
Thank you Dave. Very nice unit. I'm sure it sounds great.
Really appreciate the time you put in. Try to watch all your videos to try and learn a lot of something in everyone. Wish we were neighbors as my nakamichi 580 tape deck which worked perfectly but sat isle for 6 months now has an issue where the right output sounds clean but the left only playing the lows with a hiss for the highs and mids. Such a bummer on an otherwise great sounding deck.
Hi 12voltvids good to see your professional experience at work. I am new here and I'm sure you have experience with Akai reel to reel tape machines. Some have those terrible pot metal cams but I can get new ones but I am working on a 1730dss a customer brought me and the cams have already been changed but the motor pulley is pot metal and cracked. I can't find one so I ran thin super glue in the cracks and left it to dry for about 24 hours then powered the motor on and filled the high spots with a file. It works great and I think the super glue will hold it together for a very long time. Just thought I'd pass my encounters and remedies to you and others that may can be of help someday
Interesting video. As for always leaving things on...My father was a tv repairman back in the days of vacuum tubes, and he said that people would always say that the set quit when they got home from a vacation after it hadn't been used for a week or more...In addition, The CEO at PS Audio says that they did away with the power switches on many of their amps so that they are always on. They claim that the amps just sound better when always powered, and it cuts back the failure rate of components.
That is absolutely 100% correct. My icom ham radio the one I fixed the display on last year it's never turned off. When I went on holidays for a week somehow I didn't notice that the power supply had been turned off. When I came back and turned the radio on my display is all white again radio works display has gone bad a game I'm going to have to take it apart and see if I can fix the head unit. Equipment does last longer if it's left running. That's why television stations never shut their equipment off unless it's being transported from one location to another. Radio stations are the same everything is kept turned on and running 24 hours a day. I have several pieces of equipment here that I never turn off my security camera monitors for one. One LCD said I used to turn on and off all the time and that's the one that the fluorescent backlights failed on another identical set has never been turned off and it's been going for at least 20 years I'm looking at one right now that's never been turned off, as of right now that monitor has 66,535 hours and it's still going strong. Nine times out of 10 when the switching power supply is going to fail it's after it's been running for a while like years and you get a power failure and the capacitor is cool down then when you go to turn it back on they won't start nine times out of 10 that's when they're going to fail. the only reason I turn everything off now and I'm not using it because I'm tired of paying through the nose for my electric bill because electricity is gone up quite a bit over the years and it keeps going up so I shut stuff off when I'm not using it just to conserve energy but I know that it is going to shorten the life of the product and require more maintenance
Fantastic amp. I'm happy to own one. I have sourced spare transistors and tubes just in case.
This amp has great sound and is very punchy, very hi dynamics.
I have only one problem and that is the switches. Like this one I see.
As I have also a Quad 405 I should use the time to clean it up but have other things to do also...
The switches are the weak link unfortunately. I retired mine and use a Technics suv9 now in the control room.
@@12voltvids
Yes,
This amp was left in an appartment dat some one rented from me. For him it was just an oversized paperweight. I'm happy with that line of thought of him.
Apart from cleaning the swithches there was realy nothing wrong. This was around 15 years back.
If some one has more of those paperweights I'm in.
Hi Dave thanks for another informative video. My 2 cents to add here would be regarding pots and switches that are sealed would be to penetrate the plastic type using a hot poker as to not have any shavings go into the device
Remember they are upside down, so nothing will drop into the contacts.
@@12voltvids perfect with reverse gravity 🧐
Very nice unit!
I ran into something interesting with my old 1980's Harmon Kardon stereo. If you are touching the ground of the output cable from a cassette deck or turntable and the chassis of the stereo as you are connecting the two, you would get a small bite from it. I determined that if you put the power cable in one way, you would have power between the two with the amp off. If you put the power cord in the other way, you would see power with the amp on. I wired in the polarized cord such that the power between the two would only show up when the power was on. I reasoned that I was less likely to be changing the connections if the amp was on. It has been too long since I looked at it but I vaguely remember there were two capacitors going to ground, possibly one on each leg of the power line? Don't remember. I think I did check the voltage between the power outlet ground and the stereo and got the same results.
Generally the neutral side is coupled to the chassis using a ceramic disc cap. It's done to decouple any RF that might get picked up by the cabinet and shouldn't transfer more than a few microamps if it's if the power cord is reversed. You're not going to get a shock from it but you can certainly feel it if your hands are wet you might feel it or a little more. The leakage would be in microamps anyway but that's why we have polarized cords so that they're all on the neutral side as long as they're plugged into the same power stripper or outlet you shouldn't have a problem but if you got them plugged into different outlets there could be a slight potential difference on the neutral. There shouldn't be but quite often there is if they're going to different breakers in the panel. All depends on what other devices may be on that other leg. For example if you had something to do a lot of current such as an electric heater plugged in it's drawing a thousand Watts well that 1,000 watts is returning on the neutral line so if you're plugged into a parallel output on the same circuit that there's a big load on that neutral might be a couple volts above ground potential normally your neutral is bonded to ground back at the main panel but it can float a bit if you're drawing a heavy load because that's how it works your wine power goes through the device and comes back on the neutral so a high current resistive load for example will cause the neutral to raise up a bit could be as high as a couple volts depending on the length of the wire and how far you are from where it's grounded at the panel
I love that it has a removable bottom access panel, they should have that on more gear today. Easily serviceable gear should be a must imo.
I like the fact that you can put to caps in series to double the voltage rating but when in parallel the V rating stays the same. Using 4 caps 2 pairs both in parallel and then put those 2 separate pairs in series will double the rating for voltage and the capacitance.
The right channel on my vintage receiver was going in an out. All it needed was a can of Deoxit on all the pots and switches.
that voltage leakage is interesting. i think i have that with my laptop sometimes. every once in a while i'll feel a buzz or very slight static tingle sensation when i touch the metal case, but it only does it once in a while. i'll have to pay attention if i have a certain thing plugged into it when it happens
In Finland if you work on holiday (like i often do) you get +100% pay. Like christmas eve for example, i'm always at work and instead of normal 11€/h i get 22€/h. same thing applies for regural sundays
Yes we get double time and half. In other words triple time. For me that's about 125 an hour but taxes take a very big chunk of that. I enjoy the time off myself. I guess if i was paying a mortgage or loan I would be more eager to work those days but i don't have those expenses. Everything been paid off for years.
Dave, speaking of inrush current, I have a great soundcraftman power amplifier, rated at 400 watts rms @ 4 ohms, and when I turn it on, can hear the power surge in the transformer and filter caps !, can you suggest a soft start/speaker protection circuit that I can build to install in this amp ?, I use it as my test amp on the repair bench, thanks for any help you can give!
good, you got to make a video about it.
Well done on a relatively painless resurrection of a quality amp (you know you have something of quality when you see pre-heat and protection which works properly, saving complete chains of transistors etc from blowing). Curious as to whether you have ever seen any issues with old adhesive seeping under caps, causing conductivity between the pins.
Yeah I guess it's possible but that adhesive generally didn't flow that well. it was kind of like contacts met when it was put on so it didn't generally migrate too far under the parts it usually stuck around the seams. the big problem with it when they applied it no one ever figured it was going to after 40 years become slightly conductive so they poured it all over wires and jumpers and stuff and it's fine until it breaks down and then it starts to become slightly conductive. If it's in the critical area like the bias circuit it can certainly cause an apple fire to go out of bias. we're sitting in this apple fire it really wouldn't cause that much problem because it's basically just on the B+ and the B minus rails and the amount of leakage that's going to go through it is miniscule like we're not talking in the ohms we're talking in the mega overages so it's not going to have much of an effect on it other than possibly inducing a little bit of noise as the current mitigate to cross the glue could sound like a noisy resistor such a good idea to scrape it off wherever you can just to prevent problems. As it was drinking down and also released a corrosive compound which could attack smaller wires and I've seen it where it's been placed over is that or diodes for example and it's corroded the need away to the point where it's failed. It was nasty stuff and when you see it it's a good idea to try to remove what you can at least break the path between conductors so that you can't get the leakage farming across it.
@@12voltvids Appreciate the comprehensive insight. Keep up the good work.
Hello I have same amp with 50hz humming at idle mostly at minimum volume pot position and other artifacts like smps sound from tv output .all switches are removed for good .there are new pots .Any advice where I can look for the problem ?Thank you !
So, the LEDs inside of the unit are just for a quick visual that the electrons are flowing as they should? I have a version 1 of the Rega Elicit integrated amp that has the same thing going on inside.
They are part of the bias. When the respective tubes for that channel kicks in the led will light up. So if a tube goes dead the corresponding led will be out. Also if some other component fails in that channel it will be out. All amps should be designed this way.
@@12voltvids OK, good to know. The Elicit is not a tube amp, but I'm sure it's the same concept for solid state amps. When an LED is out, then I know that something is wrong in there. Thanks
@@JerryPemberton that's right a lot of different amplifiers have green or red LEDs to indicate that they're working. It's just a simple cheap way to show that that particular circuit has got its power. They typically put one for the positive rail and one for the negative rail which will give you a quick visual that the amplifiers are receiving its power from the power supply so for example if you're in a no sound condition and you look at The amp and you see that the two LEDs indicating negative rail is missing then you know where to look.
Woooo! I have me one of those bad boys. It is probably long overdue for a service.
I've always said that the best amps were ones with tube preamps and MOSFET outputs.
They have a very tube like sound. Oh wait a second.... One of the best sounding amps I have had the pleasure of listening to was a PS audio hybrid. It used a 12ax7 buffer to drive a class D module and it sounded fantastic.
@@12voltvids I just can't get into Class D amplifiers and I don't know why. The efficiency is excellent though.
@@srtamplification if you listened to a good one and someone didn't tell you it was class D you would never know.
I and a bunch of others did a blind listening test a few years back. Every last one of us thought we could pick the best sounding amp and after the demo was done and everyone voted for the most transparent best sounding amplifier everyone had to pick their jaw up off the floor. The class D was a qsc BTW and it was simply amazing. I used to have the same mind set about class D. No more they have come a long way. It's the theory if operation that has everyone thinking they are no good. Early units that used low carrier frequency were really only good for subs but the switching frequency is now around 1200khz.
I never heard that the inrush was the problem, but the heat cycling eventually making solder joints fail because of expansion and contraction.
That's true too heat and cool cycles cause solder joints to fail due to expansion of dissimilar metals. With incandescent light bulbs if you run them up slowly and only go to about 90% they will last literally forever. I have some decorator lamps in a grandfather clock that are operating at reduced brightness about 50% that are at least 15 years old and going strong.
Hey had a question. I’ve gone through about 10-11 older used CRT sets this year alone for gaming. Every single one had some degree of convergence separation of the red lines from the white lines. Is this something to expect with any CRT and what typically causes it, just age and wear? The set I’m currently using for gaming is a 19” low-end 1997 Magnanox (RF out only set) and the convergence is looking pretty rough. I fear if I just go chasing the CRT dragon for the perfect picture, I’ll waste money and heartbreak seeing more of the same convergence flaws.
Here's the thing about CRTs you're never going to have a perfect picture. Never! The only way you're ever going to get an absolutely perfect picture is if you build yourself a completely magnetically shielded enclosure and sit in that enclosure. This rock that we sit on is a giant magnet and the magnetic field from the earth will influence all CRTs you can get the pretty good in the middle but as you get out to the edges it becomes more problematic and television is used a circuit referred to as dynamic convergence to try to compensate for this the problem is dynamic convergence works using a lot of capacitors and coils and as they get older the value start to shift which will cause them to drift. Even if you change all the parts and you get it good now 6 months from now it's not going to be perfect that's just the way that it is. I was ready to hang myself with one customer I had that was so frustrating. Brand new Sony Trinitron big one this is going back to the late 90s. This guy was an engineer and they're always the worst and he was German that made it 10 times worse. This guy buys a new TV takes it home sets it up and gets out his protractor I've been calls and it's not right I spend hours trying to get it to his satisfaction on a brand new TV it is house I can't get it to a satisfaction I get it looking good he measures it agrees everything's good I put the back on it I turn it around and put it back in the corner he's not happy. Finally after wasting probably 10 or 12 hours, unpaid time I should say I told him there was nothing more I could do and that he really should be paying me for my time. His attitude was well you have to bill Sony. I tell him I did build Sony they paid $85 for the service call that covered the first hour I've been at your place 4 hours on two separate occasions because it's not good enough for you who's going to pay me for all those extra hours because I'm not paid by the hour I'm paid by the job and every hour I waste trying to make your TV to your acceptable standards is an hour that I'm not getting paid I finally walked out and I left it horrible by his standards. The guy comes down screaming at the boss the boss is screaming at me and I said to my boss why don't you go up to his house and see if you can do it any better. About 2 weeks later I see the TV back in the showroom the shop is giving him a refund and told him never come back. We lost our shirt on that one and my boss at the time all he said is you lost a few hours and I lost hundreds of dollars because now I can't sell this TV as a new set and that was his attitude. The guy I work for was a piece of work and that's why I left, or one of the reasons I left. But to answer your question you never going to get it looking good even when they were new they were not perfect especially in the corners you can get them close but you never going to get it perfect. you got to stick little magnets on the bell of the tube and especially them are modern ones that use static convergence little Chevron magnets go on the bell of the tube and you're going to spend hours and hours and hours trying to get the thing looking good and when you get one quarter looking good it's going to throw something else off that's just the nature of the beast for CRTs. it was even worse with the 16x9 sets they were very difficult to try to get looking perfect you can get them looking pretty good but you're always going to see some convergence or purity errors in the extreme corners.
@@12voltvids thank you for the detailed response, very much appreciated!!
I made the mistake of dickin around with the convergence rings on the neck and ruined the picture, couldnt get it back so definitely gonna avoid that for other sets
@@Retroflex01 it can be fun all right. There is a procedure to do it. You need to get the purity correct first which is I think that was the innermost pair of rings I forgot it's been so long since I've done it but to do that you need to put up a solid red screen and then you get the purity correct and then once you get the purity correct then it's the other sets of rings that will adjust the convergence but if you don't have the purity correct with a solid red screen and no other color showing but red you'll never get it you'll never get it even close. It's been so long since I've actually done that I haven't done a convergence job on a CRT probably since around 2000 or 2001. Used to change lots of Trinitron tubes back in the '90s when they were all popping like fuses but by 2,000 people were buying flat panels right so when the tube went on their TV they were tossing it out. So I tend to forget the procedure but if you look up the service manual for the model you've got there will be a procedure and it will tell you which which two adjust the purity you start with them all straight up and down pointing at 12:00 and then when you adjust them you typically spread them at an equal amount out and then rotate them and keep them together as you rotate them and there's a procedure if you look in the manual it will tell you how to do it it is involved and it will take a while.
@@Retroflex01 not a problem.
could you give me any info on the first track on the LP Dave
The track is called all about the blues. Performed by the 1972 Langley community band. My cousin was a horn player in the band when he was in high school.
With love & respect…..
….2 grand in 1985 is exactly 5.516.88 dollars today. You strike me as to frugal to spend that.
What where you doing back then brother??
I had a bad ass Luxman turntable that I had to let go of as all my local electronics guys where to incompetent to figure out what was wrong.
I was either working at Sony or the shop I was at for 20 years. Frugal? Obviously you haven't seen my setup. As to 5 grand today you are on drugs. One of these would go for a couple hundred. Perhaps 400. Electronics don't go up in price they go down. I never over pay for electronics because i know what they are worth. eBay pricing is not what they are worth. Unfortunately there are suckers born every minute and you know the saying about a fool with his money. I'm not that fool and that's why i have lots of money. I'm still working because i want to, not because i need to. I could retire tomorrow if i wanted to. I don't take expensive vacations because i am just not interested in pissing away money on a vacation. I will drop 50 grand on a new car and not think twice about it because i will have something i can enjoy for 10 years where as that round the world vacation that cost the same is done in a month and nothing to show but pictures. I can see those places on my big tv.
@@12voltvids You and I need to meet as you constantly misconstrue what I say to u. I didn’t call you cheap or broke.
Frugal is an admirable thing, it’s something to aspire to. It means not wasting money on bullsh*t! It’s what they teach you in the BoyScouts. To be thrifty & frugal.
I agree about Vacations but I have a family. I have dogs & guns so danger is a moot point. I’ve taken my family on amazing cheap vacations. I wouldn’t spend huge money on a Hotel room if I was a billionaire!
My local high end store had a McIntosh hybrid tube/solid state that sounded amazing.
@@12voltvids I think your the one on something btw. I didn’t say you payed that much for a used amp from 1985 in 2022. I was obviously adjusting for inflation! 2k US dollars in 1985 is exactly $5.516.88 today!
Inflation and FIAT currency will always fuk you over time.
We’re lucky the US dollar is still so valuable.
@@ryanjofre I know you didn't. My father in-law was cheap. I'm just tight. I'll spend big bucks on essential things but won't throw it away especially on vintage equipment. It's all out there for next to nothing. I was at a guys house working last week that picked up a sansui 9090db at the side of the road for free and it is currently listed for 3000 looking for a "sucker" with more money then brains.
@@ryanjofre the thing is inflation calculators don't work for electronics as unlike other things electronics have gone down not up. VCRs for example were 2000 for a 2 head top load in 1979. The last new one I bought in 2002 and I paid 79.00 for it. Hi Fi stereo 4 head. In 86 a 20" trinitron stereo tv was 999.85. The last new CRT I bought at Walmart I paid 65.00 for. The first plasma sets we sold were 12,000.00. When i bought my first plasma in 2008 it was 600.00. There was inflation over all those years. Your dollar certainly doesn't have the buying power that it did 30 years ago, just look at housing, groceries and energy but it doesn't apply to electronics. As technology continues to advance the prices continue to drop. Now if you said that house you bought back in the 90s for 100,000 is worth about 1.8 million today I would say you are absolutely 100% correct.
That steak that was 10 is now 40. On the other hand when i entered the work force minimum wage was 3.15. It's now over 15.00 an hour.
You should throw an Eagles record on the turntable. 😉
First chord copyright strike.
The eagles and the cars over react. I remember one video I did on am stereo I was using the DJ talking to show the quality and he was talking over the intro of one of these nites. It was picked up. Only 1 bar played and that was enough and it was way down under the dj. I would imagine the beat brothers would be as bad.
What class amp are they please
Wait, what? Someone said magic smoke, and then the following word was even "scenario?" Where? When? How!?! Don't do this to me like that! hahahaha :) 55:24
On a side note, it is hilarious when you think about it for some moments, how and why the term "magic" smoke came into play. Us tinkerers had it happen and what to tell others? Only one thing of course: Magic! Something like that, but I think my point was portrayed. hahaha
24:00 I hear a lot today how the modern workplace is dominated by vindictive people/SJWs/etc. I have to painfully inform them that it was always that way. All it takes to ruin one young person's career is one asshole like the one you ran into. It's pretty sad. I'm glad you found a new career that you enjoy in your later years.
Not where i am working. Respectful workplace policy. Be an asshole and you are the one looking for another job. Every company should have one.
Actually it wouldn't be magic smoke it would be magic Steam
Preamp issue on the board
Which EV cars do you have?
Chevy volt, a 2012 and 2019. These are plug in extended range ev. In other words the engine never fires as long as there is charge in the battery. Once the battery is down it switches to gas.
@@12voltvids Plug-in hybrids unlike the Bolt. I agree that they are EV if you stay within the limited range. You still have to haul around and maintain the ICE though.
Being an electronics guy, do you feel better about working on it if yiu have to?.
@@richardsmith2721 well there's very little maintenance to do on the internal combustion engine because it doesn't run that often. it will come on and go into what's called maintenance mode which will run it for a few minutes every couple months if it hasn't been used it will start up it will run do a full warm-up cycle to lubricate all the parts and heat up the catalytic converter and get everything up to operating temperature and then it shuts off. it also monitors how long the gas has been in the tank and once the gas reaches a birthday it will then tell you that you need to run the engine to burn the gas off and it will run the engine every time until you replenish some fuel. The wife drives the older one and she goes into gas mode a little more than I do because first of all hers is over 11 years old now and the range on the battery is much less because it had a smaller battery. Now as to those that talk about hauling around and engine and unnecessary weight the same can be said for a full EV such as a bolt or a Tesla or any of the other ones. I might be hauling around a couple hundred pounds for a small 4 cylinder engine and a fuel system and so forth which is not that big it's a small gas tank and a small exhaust system so of course that adds a bit of weight but it has less weight than hauling around a battery that weighs 2,000 lb. that's the beauty of the plug-in hybrid and why it's the only vehicle that I would drive if my vote were to get totaled I would be buying another plug-in hybrid unfortunately they no longer make the volt so I would have to go to a different brand probably a Toyota Prius prime or a RAV4 prime or possibly the escape plug-in or even maybe the Jeep plug in but one thing for sure it would be a plug-in hybrid. The reasons for this and there are many is first of all the battery cost. If the battery fails on a Tesla or a bolt or a full EV you're looking around $30,000 to replace the battery if the battery were to fail on a plug-in hybrid a replacement for the volt a rebuilt pack can be had for around 4,000. Another advantage to having a plug-in hybrid is as the battery ages the range gradually reduces. With a plug-in hybrid that's not an issue. For example my old 2012 has 185,000 miles on it now. When it was new it would get around 56 km to a charge that range has dropped now to around 47. Part of that is due to battery aging the other part is due to general motors reprogramming the computer to start the engine when they're still a greater charge remaining. The reason they're doing this is because they don't want the battery voltage dropping too low as the battery ages because if it gets below a certain level the car will lock out. The same is true for all battery only EVS as the battery ages the range is going to be reduced the range is always reduced in cold weather with a plug-in hybrid that's not an issue because the engine is there to start up and it will start immediately as soon as the battery reaches what the computer determines is its minimum state of charge and then it will charge back in the battery to keep the battery from discharging any lower. I've driven hybrids since 2005 my first one was a 2005 Ford escape not a plug-in just a regular hybrid but that vehicle was so reliable it had over 200,000 miles on it when I traded it in and the only reason I traded it in to buy my 2019 volt was because they discontinued the car and I wanted a second one while I can still get a brand new one. The old one which my wife drives on an average and it's only a 35 l tank or 8 1/2 gallons she can go 3 months and on average around 2,000 km between filling the tank. I have topped 12,000 km on one tank of fuel on mine. The reason is the battery is bigger on mine so I have a much greater range about 95 km in the warm weather around 65 when it's below freezing but I have a much greater range because it's a larger battery. now someone said why don't they put a 300 mile range battery on it well that's not necessary that's why you have the backup engine you've got a battery that is big enough for your normal day-to-day driving and then when you need to go further you've got the gas backup. The huge advantage and this is a huge advantage is when I want to travel I do not have to plan my trip around stopping to recharge. Those EV advocates will chime in and say but it's only a 30-minute charge. Okay well when I need to fill up my gas tank it's about 3 minutes to pick up 30 l of fuel. I don't need to sit around and wait for 30 to 40 minutes to get enough charge to get to the next EV charging station and furthermore while I was traveling last Summer I noted the EV drivers waiting in line to get on the two chargers that were at the charging station and it was two or three of them waiting in queue for the next charger therefore they're not stopping for half an hour they're stopping for half an hour once they get on the charger they might have an hour to wait before they even get their turn that's what I'm laughing at these people that want to travel in an EV. The greatest commuter car and a car around town but I wouldn't want to trust one for a road trip, especially driving through the fire season we had last year where roads were closed sometimes for six or seven hours you're stuck on the road when it's 40° Celsius outside you want to be able to use your air conditioner if you're stuck in an EV and no place to charge up you're going to cook. At least I can run my engine to keep my battery charged and keep my air conditioning running which the engine starts and runs for 5 minutes and then shuts off for about 20 with the air conditioning is running so it's not even burning much in the way of fuel. for me and for anybody else that drives a plug-in hybrid we would never go full on EV for the reasons I've stated above.
Some people just don't like anyone learning, it's a pride/greed problem.
You don't mind giving us information about all sorts of things, we are not likely to ever be as good as you.
I knew about the series capacitors method to make a value, but dosen't it screw up the overall esr value, so for critical circuits it's a no no?
Just a silly thought.
Well of course your ESR is going to go up slightly so if the capacitor had 0.02 ear then putting 2 in series would make it .04 so you certainly would not be doing this in a resonance circuit but we're not talking anything with any type of high frequency component. This is 60 hertz filter. Because it's a full wave bridge it's 120 HZ is what is seen. This is not going to have any impact whatsoever on a power supply but you wouldn't do it in a switch mode supply for example. I have done it however in the horizontal sweep circuit in the yolk on old black and white monitors where they used a dog polarized capacitor and one wasn't available so I put two regular capacitors with a negative turbos connected together it worked fine but because the ESR is going to double which did not have any effect on the operation but it certainly had an effect on the life of the capacitor. Sometimes so you have to do things like that if you can't source apart in a reasonable amount of time. What I was fixing monitors for example there are a lot of businesses that would bring their security monitors over. There was a jewelry store right across the parking lot from where the shop was and he had cameras all over the store and a bank of little 9-in monitors City on his desk in the back each hooked up to a VHS VCR. he would sit in the back and watch the monitors whatever there was a customer in the store while his wife ran the business and dealt with the customers. He would just sit in the back making rigs or fixing watches or whatever he did he was a watchmaker so he worked a lot of high-end watches and watch the monitors the entire time people were at the store watching for someone distracting his wife while they were trying to steal something out of the showcase etc. So what one of his monitors went down this was a code 3 emergency as far as he was concerned. He would March it across the parking lot to the store and expected fix within an hour. That was the kind of guy that he was he was paranoid that someone was going to rip him off if one of his monitors was down or camera was down. because he was friends with the older of course I had to drop everything that I was doing and get on this monitor and get it fixed and if I needed a non-polarized cap which I didn't have I had to make do with what I had just so I could get it out the door get it back in service. Sure it might only last two years and then it was back again and I was doing the same thing. But these monitors were left running all day when the store was open.
@@12voltvids He sounded like a right pain in the arse, but it was another job and money for the shop.
I wonder if he ever thought about getting a spare monitor, too tight with money i guess.
No i would not use series electrolitics in switch mode supplies.
Switch modes are picky.
@@zx8401ztv my old boss was yes. Was a toxic workplace.
So you still buy that turning equipment on and off is bad for the semiconductors?
I had a 70's amp that I had re-capped and biased idling one day and the output section went and threw DC into my sub. Good thing I was in the room with it...
I figure most good designs these days have soft start circuits?