I could listen to Big Clive all day! I feel like I am always learning when I'm listening to his videos and streams. Also has successfully inspired me on projects around the house! Greetings from New York!
A friend of mine worked as a maintenance electrician in a car manufacturing plant in the 1970s. He talked about "Old Joe" from the paint department. Joe had been handling paint, thinners and other industrial solvents for years, and consequently the skin of his hands was devoid of oils and moisture. He was able to grab live wires with impunity and was sometimes asked by the electricians to test cables for them when they hadn't got a meter to hand. Unfortunately, sometimes, Joe's sense of humour got the better of him and he would grab a wire, shake his head and then hand a live wire to the electrician.
Ah Clive, you just gave me flashbacks of growing up in the NE England living in a badly earthed house. For many years getting great big shocks from the tap (faucet) on the back of the house very regularly especially in summer when filling waterbombs and waterpistols. 🙂
Have you any plans to make any more story videos? I quite enjoyed the videos where you made something and told stories. The full video where you told a story about the decorations in George Square was nice too.
Have you ever looked at Modular Synthesis Clive? There’s plenty of scope for experimentation and there’s quite a number of kits out there now for home building. May I suggest Robin Vincent’s Molten Modular channel too? Thanks for all the fascinating and entertaining videos Clive. Cheers!
Oh my god! YOU'RE the Joule Thief guy! I remember reading about it around that time. That is the first electronic circuit type thing I ever made! I can still remember being so amazed when it worked. I've been watching your videos for years, didn't realize that was you!! You just totally blew my mind.
@@echelonrank3927 No, that isn't the point. You didn't come up with the name, and you weren't the guy that dug it up in the early 2000s when white LEDs absolutely needed this if you wanted less than 3 batteries. Clive is the one that made it famous! The name is a big, big deal.
@@ryanroberts1104 youre right, but the name doesnt mean much its just a brand a slogan of sorts like nike or coca cola P.S. Steve Jobs invented the mobile phone.
@@echelonrank3927 Just stop talking, you are making an idiot of yourself. I was talking to Clive, not you, about my experiences, not yours. This has nothing to do with "brand slogans", you keep saying dumber and dumber things that do not make *any* sense.
I had hear that the American three pin plug was patented by IBM and the patent specifies that the grounded round pin be on top for a reason. The power cord will pull down where gravity is working normally and it will take more force to unplug it if the round grounded pin is on the top. I have never been able to locate that patent. Ron W4BIN
Re the description of inductance, a good analogy would to a mechanical flywheel. It takes torque (voltage) to start it spinning (current), but once this has been down will 'like' to maintain the same rotational speed until friction etc. slows it down. AC current amount to trying to spin the flywheel clockwise, then reverse it and keep repeating the cycle. Try it on something heavy (e.g. rotating the handle of a big hammer) and you can feel the inertia resisting the amount of movement. Re sensitivity to electric shock, as an apprentice I was taught by an elderly instructor who used to lick his fingers before touching terminals to see if they were live; he couldn't feel them otherwise. Hardly a good example for young apprentices!
I kinda learned in Germany that the fuses have T for "träge" (sluggish) and F for "flink" (fast). that is not too much of a stretch wordwise, but could also be a backronym.
WOW. Interesting perspective. All the stuff I have built with micros. If they crap out I may not have the program saved anywhere or a programmer to fix the gadget may not be useable any longer. Micros are great and they can be the weakest link as apposed to discrete component circuits. Never thought about it.
We have the same problem with many old plc machines, once they get smoked they are prety much garbage, you can't even clone the PLC, you need to make a copy on another identical unit, if and when you could find one, the worst part is that some don't even use the same language and you need a product specific cable to program them
I like the ground pin down on US electrical outlets, because all the appliances with right angle power cords are designed to hang straight down in that orientation.
Clive what do you think the future has to offer? We started with incandescent bulbs, then mercury then florescent and now LED so what will be the next great light source?
I wonder what happened to the molten sulphur lamp ? I understood that the sulphur was suspended on a cushion of air and heated via microwaves. You MIGHT need 2 of these lamps to floodlight all the tennis courts at Wimbledon.
Joule thief was a project, depending on what resistor or transistor or how you wind the coil, you could get 120V out of that thing, and can draw good amount of power to light up a LED very bright from a 1,5V Cell. But i have a flashlight which does the same, but uses very little power in comparison i think, never measured it.
16:50 Wouldn't a plug-in surge protector limit inrush current as it contains a thermistor? It's a good idea to surge protect computer equipment like laser printers anyway. Some printers carry a warning to shut the printer down before turning it off at the wall or you may cause damage over time. Also why keep turning the printer on/off all the time anyway? My printers at home stay on permanently, and the printers at work do as well. No issues.
@bigclive. Was scratching my head initially at the term EDM. Until now I thought you were on about Electro Discharge Machining. In the past while tinkering at a project would often play various kinds of music , more often than not these days I play a rerun of one of your live streams.
I have a small HP laser printer that causes my small UPS (universal power supply) to power-off due to an overload when I iturn the printer on. I put the printer on a power meter plug/socket and it recorded a peak of 777Watt when first switched on! It actually only needs about 20Watt when printing, so it must be the heating element getting turned on with no protection. The doc says max 200Watt when printing, and 2.2Watt otherwise, so I was bit surprised it crashed the UPS, but the label says 2.6A/240V which I suppose is more accurate. It is now no longer protected from power cuts...
Clive, consider learning CircuitPython or MicrosPython if you do ever have the need or desire to use a microcontroller other than PIC. It willbe so very different from PIC assembly or Arduino "C" that perhaps you'll find it interesting enough to stick with it.
@@Turbochargedtwelve Adafruits "Circuit Playground Express" has a lot of bells and whistles on the board, well I guess you can't use a buzzer to make whistling sounds ;) I think that the Pico board from the raspberry pi project is probably the cheapest. Personally I've been using Circuitpython on a ESP32-S2 board that I made myself. Protip: The Psram on the wrover modules is useful for interpreted languages. My order of those modules is backordered until mid october.
@@DoctorWhom looks like ada offers a dev board. Woof that thing is beastly compared to an uno. Using it might be a touch over my head, but it is cheap….
Microphones - outdoors - you called it a muffler - I'm not going to argue about that but I'd like to point out the fact so many seem to be calling windshields 'windsocks'. A windsock is a thing on an airfield which shows approximate wind speed and direction and is nothing to do with microphones - and this does annoy me :)
Our local PBS radio WGTE has a 2hr program of EDM called Electronic Currents on Friday nights at 22:00 EDT and you can listen to it live on their site. Plus it's hosted by a limey!
@@bigclivedotcom evolved is an understatement. But you did give a fairly humours concise map of your experiences in one of the live streams which I found a pleasure to listen to.
worst shock i ever got was in technical college, i was fixing a washing machine, had a jumper cord hooked to a solenoid and the wire came loose and touched a live wire. the jumper cord was unplugged but the other end touched a live wire and i got shocked backwards while holding the plug end.... all the while standing in a puddle of water! By the time the breaker finally tripped my whole hand hurt and i didn't feel well. that was my biggest scare. my classmates gave me the name "sparky" after that!
yeah for whatever reason the NMEA standards here have ground down on 15/20-amp 120v single-phase cirucits, but every other combination (30 amp, 50 amp, 60 amp, and anything including 240 or 277) the ground is up. Who knows why.
As for the USA whether the ground pin should be up or down. One argument for down is as gravity pulls a plug out, the ground pin will be the last one pulled out. The practical answer is that MOST 3 pin devices assume the ground pin is down. So if your home is wired with the ground pin up, like mine is, then everything will be upside down! Polarized night lights are the worst. As you probably know, our neutral pin is wider. Most two pin night lights have the neutral pin wider. So they are upside down in the outlet. Annoying.
What meter/device would you recommend for someone who just wants to make sure the socket or light fixture I’m about to disconnect is not live and maybe do some very basic diagnostics?
@@bigclivedotcom once over I was a LV/HV cable jointer's mate a question that was asked at every audit was how do you prove a cable isn't live the answer is to prove the earth is good first then test your test lamp in the test box to prove it's working witch every one does backwards it not easy proofing thing aren't live
Hi Clive, how do you remotely control the zoom of your video camera? I own a Moto g6 and the only way I can do it is with finger pinch - which I presume you do not do. Thanks, Chris
Charging (lead-acid) batteries - where did you get 13·8V from ? I can't remember what my friend's alternator charge voltage was but it was around that - 13 something. She had battery problems and in the end would leave her car keys with me and while away on holiday, I'd have her car to charge the battery up PROPERLY. It typically took a week ! My charger output is over 14 volts - where it should be. If a charger is adjustable, I'd set it to 14·6V as that's the correct charging voltage. Now, what's with all these charging names - like bulk charge, trickle charge and chargers outputting different voltages (or currents) at different states of charge ? As far as I'm concerned, you connect the charger up with adequate leads and check the output is 14·6V. If the charge current is then 3mA - that's fine. If the charge current is 150A, that's fine. The battery itself will regulate its charging - all chargers need do is provide the constant voltage.
@@bigclivedotcom So a 13.8V charge voltage doesn't / won't reach a charged state voltage of that ! I think 13.8 is too much to expect from a fully charged battery. 12.6 in my head seems to agree with wiki. Of course it does depend on the electrolyte concentration !
13.8 V is the voltage of the charger a lead-acid battery can/may be subjected to for an indefinitely long time. In order to completely charge the battery, the charger has to provide 14.4 V, but the battery has to be disconnected or the charger has to switch off automatically at the end of the process. Continuing charging engenders electrolysis and production of gas (battery "boils"). All the systems that use lead-acid batteries as stand-by reserve (back-up) keep them continuously supplied by a 13.8 V source.
I've got to say, me being german, I never really understood the thing with the purple burgler alarm. The way you say it, it sounds very normal to me, very fluid.
Wow, LM3909 are $3.50 and up? You used to be able to buy those for 50 cents a piece, and less in quantity. Glad I have a couple dozen of them, but I don't know what I would use them for these days.
I'll buy some from you at 75 cents. The DIP style are less useful than the SMD, but for a few it'll be worth it. If you get out to some clubs, you'll see what they are used for these days. 👍
@@PyroRob69 for the 3909 there are no SMD packages, correct. On the consumer side, SMD vs DIP is not considered. The smaller the better, because they think it's cheaper. Our assembly and testing woes are not their concern. Sell your stock, they are useless gathering dust. Today an LED that flashes internally has mostly made the 3909 obsolete. Good luck.
NTC for a 2000 KVA 240V/110V transformer that makes an annoying not to mention worrying thump? This would avoid a relay cut in circuit once energised. I was originally thinking of just a 0.2R ww resistor but the NTC seems a better option.
Try charging the battery for a short time (1 ÷ 2 min) with a low, limited current (100 mA), from a source not exceeding the nominal voltage of the battery (e.g. 12 V). Disconnect the charger and measure the voltage of the battery; if there is a low voltage having the same polarity as the applied voltage of the charger, then that is the correct polarity of the battery. In the opposite case, there should be no significant change in the voltage across the battery. Be careful, depending on the actual status of the battery gas may be generated, which leads to deformations and even explosion.
Doesn't matter how well isolated I am, I still get a shock off the mains in this house, maybe a characteristic of TT mains and dodgy old damp houses? :S
Ever over-volt a LED back to life? Repaired a friend's nite lite, the LED hjad stopped working. was messing with the removed LED, stuck it across a 9v cell. it started working again.
From what I heard, yes. A lot. I guess it's gonna pass more power because of the criminal amount of higher frequency noise these usually put out. I also heard people complain that inverters don't like these loads in general, they often shut down.
I also had the pleasure of working with an amazing electrician. His method was ( including heavy industrial 3 phase)flick it off the back of his hand NEVER the front. He explained to me , on back of hand , the shock reaction is to push the hand away. Touching on front the current causes the hand to clench and maintain contact. All this with a guy who sweated like he had just hopped out of the shower. I have fond memories of working beside him ,waiting for a flash or bang ,over ht control boards and sweat dripping off top of his nose like a dripping tap.
Part of electrical training used to be last resort "knuckling" of busbars. Yet another essential area of electrical safety training that has been removed to allow instant certification.
My same calipers now have a funny showing screen, difficult to see, I did all I could to then check it and clean it and put it all back together, no, maybe it's just a poop screen
They're usually rated by initial resistance and continuous load current. For high loads it may be necessary to use a few in parallel like some inverter welders do.
That's quite a complex question to answer, since there are so many ways you can use both types of component. The capacitor stores an electron charge while the inductor stores a magnetic charge.
reminds me of pulling a bios chip while a computer is running to copy it to a failed one. edit there is a paint to repair window defoggers you can get.
Earth up vs down. Australia (& NZ) is E↓ whereas China is E↑. This leads to some irritation in Australia with things, from China, being apparently 'upside down'.
I'm afraid I've fallen out of love with cheap Chinese digital callipers. I've found they are short lived, they start displaying strange, unreliable readings after a while. The batteries don't always fit that well and they seem to sometimes drain whist not in use. They often have zeroing problems. Close the jaws, hit zero, open and reclose and they don't always go back to zero. After 2 or 3 cheapies, I bit the bullet and bought a EZ Cal for about 3 times the price, but it's much better made and reliable. It also comes with a calibration certificate that was signed by a human rather than pre-printed. Probably not quite in the Mitutoyo class (at 2 to 3 times the price yet again) but very serviceable for the amateur.
Contaminants inside will affect the ability to read properly, and they are also very prone to picking up electrical noise from high voltage circuity like lamp drivers.
@@bigclivedotcom I use them mainly for woodwork and general pottering about in my workshop, small repairs and DIY. No HV or other electromagnetic noise, but possibly dust.
I recently bought a new pair (because I'm not at home due to the C-word) recently. They're cute, they do fractional inches as well as mm and inches. i.e. ¼ rather than 0.25. Resolution is (apparently) 128th of an inch. Great for 'understanding' imperial hardware.
@@pjaj43 I wonder do Pratt and Whitney and rolls Royce still issue specifications for gas turbine components in imperial. Was the case up to late 90’s on any of their technical drawings etc that I handled. Often had to convert specifications both ways depending on parts, machines and code being used.
By the time the Pope becomes the supreme overlord of the Catholic church, he can no longer wear big hats due to his age and the risk of wind induced whiplash.
The pope wore a tripple crown, however afaik Jean Paul I (the three-week-pope) stopped that tradition and none of his successors picked it up again. Nowadays they only wear a ring, which is destroyed upon death or abdication. The big hats of the bishops are used ceremonially during masses (and taken off/put back on at certain times during the mass)
Of course you would put the earth pin at the top you're biased a.k.a. UK safest plug... Wait It didn't make it to the NEC because I thought I did? the one state I was helping somebody in insisted that they go up maybe it's jurisdictional? I like the earth pin down because it makes a :-) but do you see the benefit of having the ground pin Up. Either way something falling between the pins means either the outlet is not grasping the plug and needs to be replaced or the plug wasn't inserted all the way. What we really need is shaved pins which is only gonna take another how many years we just now got shattered outlets that people like to put plug covers in (no kidding I have a photo of that in a Costco). So unfortunately I am of the opinion ground down because so many 90° cords and power bricks, refrigerator cords, extension cords, ETC have been designed to go down and when you flip them upside down they tend to want to pull themselves out. With that being said so many of our products are only two prong and with an ever loving number of them being double insulated they're never going to be three prong anyway. Not too long ago my dad had a iPhone cable that the rubber flaked off of so I removed all of it since it was just gonna disintegrate leaving the bare metal shield conductor .... in hindsight not necessarily a good idea with a two-pronged apple power cube.. The cable looked and felt great. Until it was brought to me with scorch marks apparently it got wrapped around the two prongs and shorted out didn't trip a breaker just burned open although I don't think the cable works anymore.
i know you have met the owner of a certan adult toy company with a dragon as the mascot, but overall what would your impression towards the furry community if any at all?
Hi Clive, ok to leave some more Shopenhauer on your stream for Georgia Meloni to read Please? Thanks The Wisdom of Life. Shopenhauer. Section five Clive,- Fame. Under the heading of place in the estimation of the World, Georgia, We have put Fame; and this we must now proceed to consider. Fame and Honour are Twins; and Twins, too, like Castor and Pollux, of whom the one was mortal and the other was not. Fame is the underlying brother of ephemeral honour. I speak , of course, of the highest kind of fame, that is, of fame in the true and genuine sense of the word; for, to be sure there are many sorts of fame, Some of which last for but a day.
I love just putting you on in the background and listening in. I appreciate having you as company.
With your love of EDM, are you tempted to make a modular synthesizer?
I could listen to Big Clive all day! I feel like I am always learning when I'm listening to his videos and streams. Also has successfully inspired me on projects around the house! Greetings from New York!
A friend of mine worked as a maintenance electrician in a car manufacturing plant in the 1970s. He talked about "Old Joe" from the paint department. Joe had been handling paint, thinners and other industrial solvents for years, and consequently the skin of his hands was devoid of oils and moisture. He was able to grab live wires with impunity and was sometimes asked by the electricians to test cables for them when they hadn't got a meter to hand. Unfortunately, sometimes, Joe's sense of humour got the better of him and he would grab a wire, shake his head and then hand a live wire to the electrician.
Ah Clive, you just gave me flashbacks of growing up in the NE England living in a badly earthed house. For many years getting great big shocks from the tap (faucet) on the back of the house very regularly especially in summer when filling waterbombs and waterpistols. 🙂
Have you any plans to make any more story videos? I quite enjoyed the videos where you made something and told stories. The full video where you told a story about the decorations in George Square was nice too.
Have you ever looked at Modular Synthesis Clive? There’s plenty of scope for experimentation and there’s quite a number of kits out there now for home building. May I suggest Robin Vincent’s Molten Modular channel too? Thanks for all the fascinating and entertaining videos Clive. Cheers!
I have an Access Virus KB here.
@@bigclivedotcom VST programmer here - This made me subscribe!
I’d love more videos explaining the basic principles of electronics
Oh my god! YOU'RE the Joule Thief guy! I remember reading about it around that time. That is the first electronic circuit type thing I ever made! I can still remember being so amazed when it worked. I've been watching your videos for years, didn't realize that was you!!
You just totally blew my mind.
We all invented joule thiefs at some stage I used one before LEDs were even a thing. I copied it from a 60s ham radio magazine.
@@echelonrank3927 No, that isn't the point. You didn't come up with the name, and you weren't the guy that dug it up in the early 2000s when white LEDs absolutely needed this if you wanted less than 3 batteries. Clive is the one that made it famous!
The name is a big, big deal.
@@ryanroberts1104 youre right, but the name doesnt mean much its just a brand a slogan of sorts like nike or coca cola
P.S. Steve Jobs invented the mobile phone.
@@echelonrank3927 Just stop talking, you are making an idiot of yourself. I was talking to Clive, not you, about my experiences, not yours. This has nothing to do with "brand slogans", you keep saying dumber and dumber things that do not make *any* sense.
The Universal Building Code in the US has the ground lug at the top for all commercial installations. It just gets ignored quite a bit.
I had hear that the American three pin plug was patented by IBM and the patent specifies that the grounded round pin be on top for a reason. The power cord will pull down where gravity is working normally and it will take more force to unplug it if the round grounded pin is on the top. I have never been able to locate that patent. Ron W4BIN
Re the description of inductance, a good analogy would to a mechanical flywheel. It takes torque (voltage) to start it spinning (current), but once this has been down will 'like' to maintain the same rotational speed until friction etc. slows it down. AC current amount to trying to spin the flywheel clockwise, then reverse it and keep repeating the cycle. Try it on something heavy (e.g. rotating the handle of a big hammer) and you can feel the inertia resisting the amount of movement.
Re sensitivity to electric shock, as an apprentice I was taught by an elderly instructor who used to lick his fingers before touching terminals to see if they were live; he couldn't feel them otherwise. Hardly a good example for young apprentices!
Upstate New York State, USA here, your "purple burglar alarm" was perfectly intelligible to me.
Any Scottish heritage 🙂
Central NY here, same!
Western Massachusetts, same here.
#limmy
I'm German Canadian and I think he says it exactly how I would. Wild
I kinda learned in Germany that the fuses have T for "träge" (sluggish) and F for "flink" (fast). that is not too much of a stretch wordwise, but could also be a backronym.
WOW. Interesting perspective. All the stuff I have built with micros. If they crap out I may not have the program saved anywhere or a programmer to fix the gadget may not be useable any longer. Micros are great and they can be the weakest link as apposed to discrete component circuits. Never thought about it.
Cheers for the A to my Q, Clive :-)
We have the same problem with many old plc machines, once they get smoked they are prety much garbage, you can't even clone the PLC, you need to make a copy on another identical unit, if and when you could find one, the worst part is that some don't even use the same language and you need a product specific cable to program them
I don't have a purple burglar alarm but I'll have to be on the lookout for one around the south side of the city.
I like the ground pin down on US electrical outlets, because all the appliances with right angle power cords are designed to hang straight down in that orientation.
Clive what do you think the future has to offer? We started with incandescent bulbs, then mercury then florescent and now LED so what will be the next great light source?
I wonder what happened to the molten sulphur lamp ? I understood that the sulphur was suspended on a cushion of air and heated via microwaves. You MIGHT need 2 of these lamps to floodlight all the tennis courts at Wimbledon.
Aww, Clive a Ceephax fan! Warms the heart 💙
Joule thief was a project, depending on what resistor or transistor or how you wind the coil, you could get 120V out of that thing, and can draw good amount of power to light up a LED very bright from a 1,5V Cell. But i have a flashlight which does the same, but uses very little power in comparison i think, never measured it.
Great Q&A . Thanks for the EDM recomdaton.
Have you much experience with two-way radios such as the CB or PMR446?
16:50 Wouldn't a plug-in surge protector limit inrush current as it contains a thermistor? It's a good idea to surge protect computer equipment like laser printers anyway. Some printers carry a warning to shut the printer down before turning it off at the wall or you may cause damage over time. Also why keep turning the printer on/off all the time anyway? My printers at home stay on permanently, and the printers at work do as well. No issues.
About the US plug orientation...while the ground prong down is the most common usage...I prefer the ground prong up orientation for safety.
@bigclive. Was scratching my head initially at the term EDM. Until now I thought you were on about Electro Discharge Machining.
In the past while tinkering at a project would often play various kinds of music , more often than not these days I play a rerun of one of your live streams.
I have a small HP laser printer that causes my small UPS (universal power supply) to power-off due to an overload when I iturn the printer on. I put the printer on a power meter plug/socket and it recorded a peak of 777Watt when first switched on! It actually only needs about 20Watt when printing, so it must be the heating element getting turned on with no protection. The doc says max 200Watt when printing, and 2.2Watt otherwise, so I was bit surprised it crashed the UPS, but the label says 2.6A/240V which I suppose is more accurate. It is now no longer protected from power cuts...
1:18 The answer to this question solves a mystery for me.... Remove Clives Beard and he's TECHNO VIKING !!! :P
Thank you Clive. I'll catch the 3rd video tomorrow.
Clive, consider learning CircuitPython or MicrosPython if you do ever have the need or desire to use a microcontroller other than PIC. It willbe so very different from PIC assembly or Arduino "C" that perhaps you'll find it interesting enough to stick with it.
What board/kit do you recommend to learn on?
@@Turbochargedtwelve Adafruits "Circuit Playground Express" has a lot of bells and whistles on the board, well I guess you can't use a buzzer to make whistling sounds ;) I think that the Pico board from the raspberry pi project is probably the cheapest.
Personally I've been using Circuitpython on a ESP32-S2 board that I made myself. Protip: The Psram on the wrover modules is useful for interpreted languages. My order of those modules is backordered until mid october.
@@DoctorWhom looks like ada offers a dev board. Woof that thing is beastly compared to an uno. Using it might be a touch over my head, but it is cheap….
clive said BULK ASSEMBLY.......I couldnt stop laffing.....and when the pope hats came in then it really started to hurt.
Microphones - outdoors - you called it a muffler - I'm not going to argue about that but I'd like to point out the fact so many seem to be calling windshields 'windsocks'.
A windsock is a thing on an airfield which shows approximate wind speed and direction and is nothing to do with microphones - and this does annoy me :)
Our local PBS radio WGTE has a 2hr program of EDM called Electronic Currents on Friday nights at 22:00 EDT and you can listen to it live on their site. Plus it's hosted by a limey!
Do you already have a vid on how you got into electronics and how you started in the electrical industry?
If not would you consider making one?
I've not. It all evolved over time.
@@bigclivedotcom evolved is an understatement. But you did give a fairly humours concise map of your experiences in one of the live streams which I found a pleasure to listen to.
worst shock i ever got was in technical college, i was fixing a washing machine, had a jumper cord hooked to a solenoid and the wire came loose and touched a live wire. the jumper cord was unplugged but the other end touched a live wire and i got shocked backwards while holding the plug end.... all the while standing in a puddle of water! By the time the breaker finally tripped my whole hand hurt and i didn't feel well. that was my biggest scare. my classmates gave me the name "sparky" after that!
yeah for whatever reason the NMEA standards here have ground down on 15/20-amp 120v single-phase cirucits, but every other combination (30 amp, 50 amp, 60 amp, and anything including 240 or 277) the ground is up. Who knows why.
The ground down position is for water spray, spills or flooding. Any seeping water will reach ground instead of reaching the floor at line voltage.
Hi Clive
I am thinking of getting an ioniser for
my home, are they safe as I have read that they can affect your breathing.
Ordinary ionisers are safe.
As for the USA whether the ground pin should be up or down. One argument for down is as gravity pulls a plug out, the ground pin will be the last one pulled out. The practical answer is that MOST 3 pin devices assume the ground pin is down. So if your home is wired with the ground pin up, like mine is, then everything will be upside down! Polarized night lights are the worst. As you probably know, our neutral pin is wider. Most two pin night lights have the neutral pin wider. So they are upside down in the outlet. Annoying.
In Canada common practice is ground down - no code. However in Hospital code is ground up, no option.
What meter/device would you recommend for someone who just wants to make sure the socket or light fixture I’m about to disconnect is not live and maybe do some very basic diagnostics?
For mains voltage wiring I tend to recommend a set of electricians test lamps. They apply a slight load to the circuit for a more accurate indication.
@@bigclivedotcom once over I was a LV/HV cable jointer's mate a question that was asked at every audit was how do you prove a cable isn't live the answer is to prove the earth is good first then test your test lamp in the test box to prove it's working witch every one does backwards it not easy proofing thing aren't live
Hi Clive, how do you remotely control the zoom of your video camera? I own a Moto g6 and the only way I can do it is with finger pinch - which I presume you do not do. Thanks, Chris
Charging (lead-acid) batteries - where did you get 13·8V from ? I can't remember what my friend's alternator charge voltage was but it was around that - 13 something. She had battery problems and in the end would leave her car keys with me and while away on holiday, I'd have her car to charge the battery up PROPERLY. It typically took a week ! My charger output is over 14 volts - where it should be. If a charger is adjustable, I'd set it to 14·6V as that's the correct charging voltage.
Now, what's with all these charging names - like bulk charge, trickle charge and chargers outputting different voltages (or currents) at different states of charge ? As far as I'm concerned, you connect the charger up with adequate leads and check the output is 14·6V. If the charge current is then 3mA - that's fine. If the charge current is 150A, that's fine. The battery itself will regulate its charging - all chargers need do is provide the constant voltage.
13.8V is a typical fully charged value for a 12V lead acid battery. The open circuit charge voltage may be higher to ensure full charging.
@@bigclivedotcom So a 13.8V charge voltage doesn't / won't reach a charged state voltage of that ! I think 13.8 is too much to expect from a fully charged battery. 12.6 in my head seems to agree with wiki. Of course it does depend on the electrolyte concentration !
13.8 V is the voltage of the charger a lead-acid battery can/may be subjected to for an indefinitely long time.
In order to completely charge the battery, the charger has to provide 14.4 V, but the battery has to be disconnected or the charger has to switch off automatically at the end of the process. Continuing charging engenders electrolysis and production of gas (battery "boils").
All the systems that use lead-acid batteries as stand-by reserve (back-up) keep them continuously supplied by a 13.8 V source.
I've got to say, me being german, I never really understood the thing with the purple burgler alarm. The way you say it, it sounds very normal to me, very fluid.
I feel dumb promoting my edm playlist because I sure af didn't make it for others but you might enjoy it Clive. If you get ads then you won't.
Wow, LM3909 are $3.50 and up? You used to be able to buy those for 50 cents a piece, and less in quantity. Glad I have a couple dozen of them, but I don't know what I would use them for these days.
I'll buy some from you at 75 cents. The DIP style are less useful than the SMD, but for a few it'll be worth it. If you get out to some clubs, you'll see what they are used for these days. 👍
@@d.t.4523 DIPs still have use. SMD's are more difficult to breadboard. Also, I haven't seen any LM3909's as SMD's, only DIP packages.
@@PyroRob69 for the 3909 there are no SMD packages, correct. On the consumer side, SMD vs DIP is not considered. The smaller the better, because they think it's cheaper. Our assembly and testing woes are not their concern. Sell your stock, they are useless gathering dust. Today an LED that flashes internally has mostly made the 3909 obsolete. Good luck.
NTC for a 2000 KVA 240V/110V transformer that makes an annoying not to mention worrying thump?
This would avoid a relay cut in circuit once energised. I was originally thinking of just a 0.2R ww resistor but the NTC seems a better option.
Ceephax hell yeah dude lollll I love it. He slept on my couch
How do you know which is the positive and negative side on a discharged, unmarked lead acid battery?
If it's discharged that far it may need replaced.
Try charging the battery for a short time (1 ÷ 2 min) with a low, limited current (100 mA), from a source not exceeding the nominal voltage of the battery (e.g. 12 V). Disconnect the charger and measure the voltage of the battery; if there is a low voltage having the same polarity as the applied voltage of the charger, then that is the correct polarity of the battery. In the opposite case, there should be no significant change in the voltage across the battery.
Be careful, depending on the actual status of the battery gas may be generated, which leads to deformations and even explosion.
Speaking of electric shocks, what was your first major shock, and what was your most pleasurable?
Doesn't matter how well isolated I am, I still get a shock off the mains in this house, maybe a characteristic of TT mains and dodgy old damp houses? :S
we do like q&a builds. 👍👍
Ever over-volt a LED back to life? Repaired a friend's nite lite, the LED hjad stopped working. was messing with the removed LED, stuck it across a 9v cell. it started working again.
When the thin film gallium nitride LEDs fail they can sometimes short out. Overcurrenting them can blow the fault clear for a while.
@@bigclivedotcom Interesting. It was a warm white one made about a decade ago. no clue what tech is in it.
Is there any issues running a capacitive dropper circuit on a square wave inverter?
From what I heard, yes. A lot. I guess it's gonna pass more power because of the criminal amount of higher frequency noise these usually put out. I also heard people complain that inverters don't like these loads in general, they often shut down.
I use ttl as much as possible when I make something to simplify repair and reverse engineering
I worked with an electrician who would test if a circuit was hot by licking his forefinger and thumb and touching the bare ends of the wires.
I also had the pleasure of working with an amazing electrician. His method was ( including heavy industrial 3 phase)flick it off the back of his hand NEVER the front.
He explained to me , on back of hand , the shock reaction is to push the hand away. Touching on front the current causes the hand to clench and maintain contact.
All this with a guy who sweated like he had just hopped out of the shower. I have fond memories of working beside him ,waiting for a flash or bang ,over ht control boards and sweat dripping off top of his nose like a dripping tap.
Part of electrical training used to be last resort "knuckling" of busbars. Yet another essential area of electrical safety training that has been removed to allow instant certification.
Hi I’ve got an E Scooter the lights work when plugged in to mains but nothing when not do you no what batteries they take and how to change them
It does sound like a faulty battery pack or charging system. The manufacturer or a scooter repair place should be able to help.
Question:
What was the most dangerous situation for you?
My same calipers now have a funny showing screen, difficult to see, I did all I could to then check it and clean it and put it all back together, no, maybe it's just a poop screen
Lock picking is fun until you have to get through a worn 1970s lock that barely works with its key.
I have bought a 2kva variac and it just kept popping the breaker. What type of ntc should i be loooking for and where
They're usually rated by initial resistance and continuous load current. For high loads it may be necessary to use a few in parallel like some inverter welders do.
is it correct to say that that a capacitor is to voltage as an inductor is to current?
That's quite a complex question to answer, since there are so many ways you can use both types of component. The capacitor stores an electron charge while the inductor stores a magnetic charge.
reminds me of pulling a bios chip while a computer is running to copy it to a failed one. edit there is a paint to repair window defoggers you can get.
You can get a silver loaded paint specifically for repairing the window heaters.
Re: EDM, Clive is the reason I learned about The Shamen as an American.
Earth up vs down. Australia (& NZ) is E↓ whereas China is E↑. This leads to some irritation in Australia with things, from China, being apparently 'upside down'.
"Purple Burgular Alarm" easy enough to understand to a southern Australian.
I sure the Kewi will l have no trouble either.
sa great 10c recycling rate
@@echelonrank3927 and slowly spreading after decades. NT has one. Vic will soon
@@seanet1310 its a disease. you know this means more grog for the homeless
P.S. there are people going through my bins at night
2 more fuse grades:
TT fuses = Very Slow Acting
FF fuses = Very Fast Acting
Perhaps it's time to upgrade that laser printer with the pull starter to something that doesn't dim the lights! 👍 😂
I just pictured you dancing to EDM, and now I can't get it out of mind. Is there a remedy?
Do you play video games by any chance?
Are you going to do a Part 3?
I'm afraid I've fallen out of love with cheap Chinese digital callipers. I've found they are short lived, they start displaying strange, unreliable readings after a while. The batteries don't always fit that well and they seem to sometimes drain whist not in use. They often have zeroing problems. Close the jaws, hit zero, open and reclose and they don't always go back to zero. After 2 or 3 cheapies, I bit the bullet and bought a EZ Cal for about 3 times the price, but it's much better made and reliable. It also comes with a calibration certificate that was signed by a human rather than pre-printed. Probably not quite in the Mitutoyo class (at 2 to 3 times the price yet again) but very serviceable for the amateur.
Contaminants inside will affect the ability to read properly, and they are also very prone to picking up electrical noise from high voltage circuity like lamp drivers.
@@bigclivedotcom I use them mainly for woodwork and general pottering about in my workshop, small repairs and DIY. No HV or other electromagnetic noise, but possibly dust.
I recently bought a new pair (because I'm not at home due to the C-word) recently. They're cute, they do fractional inches as well as mm and inches. i.e. ¼ rather than 0.25. Resolution is (apparently) 128th of an inch. Great for 'understanding' imperial hardware.
@@Brian_Of_Melbourne understanding imperial hardware = industrial archaeology 😁
@@pjaj43 I wonder do Pratt and Whitney and rolls Royce still issue specifications for gas turbine components in imperial. Was the case up to late 90’s on any of their technical drawings etc that I handled.
Often had to convert specifications both ways depending on parts, machines and code being used.
Local Electrical code where I live is ground pin up.
T thought the pope just wore a little beanie , maybe the bishops wear the big hats to compete for the top.
By the time the Pope becomes the supreme overlord of the Catholic church, he can no longer wear big hats due to his age and the risk of wind induced whiplash.
The pope wore a tripple crown, however afaik Jean Paul I (the three-week-pope) stopped that tradition and none of his successors picked it up again. Nowadays they only wear a ring, which is destroyed upon death or abdication.
The big hats of the bishops are used ceremonially during masses (and taken off/put back on at certain times during the mass)
97 it was published and you named it in 01 I believe
Of course you would put the earth pin at the top you're biased a.k.a. UK safest plug...
Wait It didn't make it to the NEC because I thought I did? the one state I was helping somebody in insisted that they go up maybe it's jurisdictional?
I like the earth pin down because it makes a :-) but do you see the benefit of having the ground pin Up. Either way something falling between the pins means either the outlet is not grasping the plug and needs to be replaced or the plug wasn't inserted all the way. What we really need is shaved pins which is only gonna take another how many years we just now got shattered outlets that people like to put plug covers in (no kidding I have a photo of that in a Costco). So unfortunately I am of the opinion ground down because so many 90° cords and power bricks, refrigerator cords, extension cords, ETC have been designed to go down and when you flip them upside down they tend to want to pull themselves out.
With that being said so many of our products are only two prong and with an ever loving number of them being double insulated they're never going to be three prong anyway. Not too long ago my dad had a iPhone cable that the rubber flaked off of so I removed all of it since it was just gonna disintegrate leaving the bare metal shield conductor .... in hindsight not necessarily a good idea with a two-pronged apple power cube.. The cable looked and felt great. Until it was brought to me with scorch marks apparently it got wrapped around the two prongs and shorted out didn't trip a breaker just burned open although I don't think the cable works anymore.
Part 3.
th-cam.com/video/tvXGsHGiTfs/w-d-xo.html
If anyone's wondering it's spelled 'CEEPHAX' acid crew
Live at Intercell 2019 (Amsterdam) will give you a good taster
If you look at 54:24 on that Ceephax video, do you think his drink got spiked?
You shouldn't worry about what machinists say. If it doesn't spin then they don't understand it.
transmittance :)
CEEPHAX ACIIIIIIIIIIIIIIIIIID
I bet clive works on black budget programs reverse engineering alien technology and Tesla's stuff but he's so crafty we will never knowww
Shhh. Wait til his disclosure video, then buy stock in Big Clive Industries! 👍 😂
@@d.t.4523 super computers it makes so much sense now
@@GREATLORDPOOH Don't spill the beans! The maid might get mad and hit you with a wet mop. 😂
emissivity
i know you have met the owner of a certan adult toy company with a dragon as the mascot, but overall what would your impression towards the furry community if any at all?
Hi Clive, ok to leave some more Shopenhauer on your stream for Georgia Meloni to read Please? Thanks The Wisdom of Life. Shopenhauer.
Section five Clive,- Fame.
Under the heading of place in the estimation of the World, Georgia, We have put Fame; and this we must now proceed to consider.
Fame and Honour are Twins; and Twins, too, like Castor and Pollux, of whom the one was mortal and the other was not. Fame is the underlying brother of ephemeral honour. I speak , of course, of the highest kind of fame, that is, of fame in the true and genuine sense of the word; for, to be sure there are many sorts of fame, Some of which last for but a day.