Sorry you find it irritating. It is actually a natural part of my voice, and is quite common in Australia. Look up "High Rising Terminal" for instance. Yes, I do it even when talking about dull stuff. I can't please everyone, many people actually LIKE IT and would hate it if I changed to something more drone. I could probably control it if I tried, and did re-takes. But that's not me, and trying to change the way I talk because a few people don't like it is, well, really kinda silly I think.
F those haters. I'm from a part of a state in a part of the country where southerners like to make fun of the way we talk up here. Life is good up here. F those drawl talkin' haters.
I go back and watch these old videos. And it blows my mind how far you have come Dave. Its amazing. But it is all due to your vast knowledge of theory as well as your personality. I love when you get really excited about a subject...Ive been following for a long tine, and have learned a great deal from you. So, a giant THANK YOU !
You get theory about ideal caps in the classroom but you don't get the practical side of how to implement them in a real application. This is one of the things that make this blog pure gold. As Dave would say "I like it".
I've been a real prick in the comments lately. I just wanted to apologize and thank you for making these videos, and putting up with people who act like I did at times
One of the most detailed videos, I have not seen a more detailed video than this one, I am a novice when it comes to electronics, but videos like these is what novices like myself need to look at, only a few videos talk about esr and esl which is why I have understood why we use a ceramic capacitor, but I still not understood why do we use a capacitor, and if they are in parallel to the load them the load is getting twice the energy, amazing knowledge shared thank for being my guru just like another channel afrotechmod.
I'm a fan of your videos. I went back to this earlier video and what I really appreciate is your insight and experience. You hit on all the best aspects of capacitors in this video. Thank you.
a good thumb nail sketch of capacitor types and properties. A practical look at the implications of them. Plus delivered in the Dave way! super fun, informative, and entertaining.
Thanks for reviewing the application and construction of components. You've got an excellent working grasp of the E.E. field. And I (for one) appreciate that you keep the Simpson analog meter parked within easy reach. Mine's approaching 35 years old.....and it looks like it will survive my passing(plus it fits right in with the WW II radio collection). Thanks again....btw, I'd recommend Global Specs. update service for anyone who desires to stay on the curve(especially with RF components)
I'm Australian, I can't help it. I've actually had more people say the like the accent than those who dis it. So based on the current poll, I'm not going to voice-over school. Sorry.
Great video Dave!! Some considerations about caps in series: the resistances will be an additional load to power. They will heat, so choose and position them wisely, so that they don't worsen the thermal weaknesses of the caps they are helping. If the current leaking from one of the caps in series is not minimal, the next cap will overload (it will go above its max rated v) even with the resistors network. Cheers from Italy you crazy Aussie bloke!!!
And Dave knows (see his Tektronix 2245B refurb video) that you have to install them in the right direction!. Electrolytics do explode - Dave just about jumped through the ceiling... Just given you a little bit of the business, Dave. Super helpful video, Dave. Thanks.
Any chance we could get reissue of episode 33? Your production quality has improved dramatically since this was published, great work Dave, you are such an inspiration!
Thanks for the tip of putting both a PolyPopylene and a Polyester cap in parallel to achieve better temperature stability, Dave.. :) I might try that in a Tube radio rebuild I am planning of doing in the near future, the insides of those chassis can get pretty toasty so I wonder if it would have added value doing it like you mentioned (on selected, perhaps more sensitive, spots inside the circuit). Greetings from the Netherlands
Seeing that I spent 60k for a eet associate's degree. I understand everything u said. Scraping computer part to melt down. After I get a trash can full. Love the video. Thanks
@daddyoca69 Use the parametric search tools on Digikey or Mouser or Farnell. It's often easy to start by narrowing down by something like footprint size and price as a first order.
You are lucky enough to have two commenters that care enough to leave constructive criticism. We are both saying we like you and we want you to be better. IMO (and probably James'), removing the HRT-like thing you do would make your video go from pretty good - to excellent.
I am not offended. I take any and all feedback, thanks. Not everyone thinks the HRT is annoying or distracting. More people have commented that they LIKE the way I talk and deliver, and DON'T want me to change. How do I please everyone? Yes, I'm happy with the way I talk, it's ME. I think it would be better to let my delivery naturally change as I get more experience. I'm trying to eliminate the fillers because they take up valuable time, but that's been hard to do with no script.
An important thing to remember when designing circuits is to 'derate' the capacitors. That is, use capacitors whose voltages and perhaps capacitance (when bypassing, for example) are higher than the maximum necessary. The amount to derate is a function of (among other things) the capacitor material and maximum ambient temperature. Derating is necessary since the capacitor will, as Dave mentioned, breakdown over time. Aluminum electrolytic caps are the worst so far as this goes.
Whilst aluminium electrolytic can be horrible, if used well within their rated specs that can give a useful reliable life for many years. I agree they can dry out after many years, but today equipment is not normally expected to be used for that long anyway.
I might be silly to change it in your everyday life. But it makes sense to reduce or remove anything that might narrow your audience if you are presenting something to the public. Take it like saying "um" and "uh" a lot when speaking. In speech class, they teach you to eliminate fillers because it's a distraction for the listener. James and I are just saying that the HRT-like thing is a distraction.
I recently blew one up, I connected 28v to a board and it was probably not rated for that. I had my head above the board to see if the leds turned on and there was a loud bang and some metal piece hit my forehead pretty hard. I don't wanna know what could have happened if I got it in the eye.
Lol,old story,had one of those shooting a hole in our gypsum ceiling as a kid :) Later one shot my resin plated hollow door! They shoot through your casing and still be lethal! The velocity is really like or better(better??)that of air guns!
Ferretsnarf You always have to respect a component that can kill you even when the power is off. Opening some project cases is like opening a box of scorpions. Have you seen those super caps with hundreds of Michael Faradays in them? Shudder.
Ferretsnarf I just fucked up a PSU a few weeks ago. I did a stability test (left it on for 2 hours with some load on it) and a cap exploded with a really loud bang. 30 cms from my head. While watching a movie. It scared the living shit out of me :D
Once I hooked up a 12v DC device to 20v AC supply on accident(they used the same plug). All 4 reservoir caps popped one after the other. I thought it was the fourth of july.
Thanks for the great video. I have a qestion on the temperature of electrolytic caps: I'm trying to find non-functioning caps on a pcb. None show any visual signs of damage (bulging etc.), so before I make the effort to solder them out to test them individually, I was wondering whether I could see if they are within their temperature specs by measuring the temperature while in use, using a infrared temperature measurement device (pointed at the caps, one at a time). Am I going somewhere with this, or does it make no sense and there is just no way around soldering and testing all caps invididually? PS: Keep up the good work!
What about mylar caps? Also, back in my military days, all caps were received and stored with lead taped together to prevent a recovery recharge. Large caps for transmitter power supplies had shorting straps for the same reason. Haven't seen that used in years though.
The best part about electrolytic and tantalum capacitors is blowing them up. Now if you want to turn them into firecrackers, you have to be careful, but it can be fun !!!! 😁😁😁
Don't assume that low ESR aluminum electrolytics will work universally with all low-dropout voltage regulators. Many of these regulators need a _specific range_ of ESR to prevent oscillation. Regarding mica capacitors, NPO ceramics rival temperature stability, but don't generally sustain as high a voltage as the mica types.
Hee, hee, so those lines inscribed on the top are a "pressure vent"? I thought the pressure vent was the rubber part on the bottom, which is designed so when it blows, all that corrosive juice gets sprayed onto the PCB, and into the other components!
Thanks for the info on the capacitors. I have seen many circuits that have a slot for two capacitors and they only install 1. know I know what to do to make these this last longer.
Hi Mr Dave Jones I would like to see you make a video on how to solder film capacitors like polypropylene as film can melt with heat I looking forward to solder thru hole polypropylene but scared about it's melting point
Electrolytic capacitors mounted on electronic circuits of devices manufactured after 1990 can remain unused for as long as possible without this disuse causing failures and depolarization in the electrolytic capacitors?
HI, when you talk about using two electrolytics in parallel do you mean two separate caps or would a dual cap such as a 50/50 at 450V work the same? I hope my question is not to long winded. lol I am referring to the old four input Marshall amps. Up till about 1968 or so they used two 100uf/350V caps in series. But then they changed to two 50/50 caps in a parallel/series configuration for the first two stages. The first one for the OT center tap and the second one for the power tube screens. Thank you for the videos. They have been most helpful.
Good informative video....I have a question..I have a power amp and the filter caps are 7500uf ...if I replaced with 10000uf ... what will happen...and which brand is good for filter caps
4:37 I was looking over a D-link DFE-530tx 10\100 NIC and there is an AAT1201 voltage regulator with 2 x(47 uF aluminum electrolyte caps) together like in that diagram except there was no resistors nearby through hole or surfacemount. can you get away with this or is this a bad product design.
Great video Dave , thought it might help me fix my Dyson motor, it has one of these x1 self healing capactors attached to the motor, now my question is , is it possible that this capacitor is defective like a short and therefore the motor doesnt work or is it there just for protection and even if the capacitor is defective the motor should still work, not sure if I'm making much sence
I have a question about using electrolytic capacitors in power supplies. Is there any way of knowing if you should use polarized or non polarized ? Or do you just try it and if it doesn't work change it ?
I'd love to see you do reviews of PC power supplies mate (build quality/efficiency etc). There are some decent sites out there but yours would be a lot more entertaining, to say the least. Reading reviews is rather boring, it'd be a hell of a lot more interesting to actually watch them. Just a thought!
What we perceive as *"better"* (warmpth, brightness, wow, flutter, etc) is mainly because our brains are *anolog* not digital. Just as vinyl will sound "better" (to audiophiles) than a CD recording.
They don't... but they make a better choice along with styroflex and foil caps. The downside is, they all come expensive... but have great life time expectency.
Homework: "Do not use electrolytic capacitors unless you're familiar with their use." Me, a first year EE student: "I wonder what that's about?" Dave: "They are polarized and can explode." Me: "Got it. Sticking to the ceramics."
its hard to find good how to's videos on here like this, this so fare is the best Tech channel on youtube. love it and lots of good infor. but I do have a question I hop you can help with do you know of a good schmatic for an low voltage cut off circuit and a high voltage circuit I'm building a charge controler and I want to protect both ends both high and low. voltage cutoff.
Thanks for the nice video. How can we distinguish between x and y main capacitors? There are also min capacitors with grey packages (rather than yellow), is there any difference between their type?
The proper way to respond would be "Thanks for your feedback; but It's my accent, and I like it. It's common in Australia, here's more info [(insert wiki link)]" A response like that would probably curb all further discussion. P.S. I'm glad none of the Aussies I know have HRT ;)
How do you calculate the resistance value to go in parallel with series electrolytic caps. I thought you just picked a high value like 100k. I have 650vdc with two 47uf 450vdc in series across it. Thanks Duane
+Zambia95 In a Switching Power Supply for example, current is turned on and off very very fast by a pair of fast switching transistors which creates lots of fast electrical pulses, (blips on the waveforms) or whatever you want to call them (some are higher and more spurious than others) this is also bad for cheap capacitors. Ripple is small unwanted AC current on top of the DC which is generally bad as it can cause the capacitor to fail prematurely and degrade the pure DC output and damage electronic components further up the chain. Thats why is best to always use the best quality caps you can find for those particular applications (I think that's right -correct me if I'm wrong Dave)
Generally no (in a SMPS) if the circuit is well designed, but it does happen and so sometimes a HV or High current spike will present on the capacitors and that is not good. Some capacitors are designed specifically for these purposes, and therefore cost a lot more. The term "high current/voltage Pulse" in electronics can be related to many different types of applications. I think what Dave basically meant that you need to choose the correct type of component (capacitor) for a specific job and that using cheap parts in certain circuits like SMPS will make them fail early. (like the bulging cap scenario) Manufacturers of most electronic devices don't always use the best parts available due to costs.
Is there any reason to use an SMD 1uF Tantalum cap over a ceramic? The datasheet for the part I'm using calls out a Tantalum, but i believe it's just due to ceramic capacitors historically not being able to generate higher capacitances. These days you can get 100uF, even 500uF ceramic capacitors.
I've been keeping old electronic devices from the early 90's and 2000's example snes console, ps2 slim and crt tvs will these devices have problems with aluminum electrolytic capacitors if stored for a long time?
Hey cap man, I just want to know how I can explode a 2400MFD 450 VDC cap. All I have is a 15KV Transformer. I tried a parallel connection across secondary and lost voltage. In series, it just passed through. Do I need to rectify to DC ?
Sorry you find it irritating. It is actually a natural part of my voice, and is quite common in Australia. Look up "High Rising Terminal" for instance.
Yes, I do it even when talking about dull stuff.
I can't please everyone, many people actually LIKE IT and would hate it if I changed to something more drone.
I could probably control it if I tried, and did re-takes. But that's not me, and trying to change the way I talk because a few people don't like it is, well, really kinda silly I think.
But i always laugh a litle when i hear you so it is good thing right :)
So dont do drone voice
cheers mate :)
F those haters. I'm from a part of a state in a part of the country where southerners like to make fun of the way we talk up here. Life is good up here. F those drawl talkin' haters.
Speak whatever you feel like I will always enjoy learning new things from you. Regards from Turkey.
I love your voice. In fact I prefer it. Please don't let the negative Nancy's get to ya.
I go back and watch these old videos. And it blows my mind how far you have come Dave. Its amazing. But it is all due to your vast knowledge of theory as well as your personality. I love when you get really excited about a subject...Ive been following for a long tine, and have learned a great deal from you. So, a giant THANK YOU !
This guy hasn't aged a day in six years.
im from philippines theres a lot yamashita treasure here u know. will u make a diagram to make a deep sence detector. ihave a treasure map.
just eat raw vegetables
I don't believe you. It's not possible.
Even in 12 years he didn't really. Australia must at least where he lives be a place where people do not age at all.
@@asagk He takes pretty good care of his body. He's a certified personal trainer, or at-least was.
You get theory about ideal caps in the classroom but you don't get the practical side of how to implement them in a real application. This is one of the things that make this blog pure gold. As Dave would say "I like it".
I've been a real prick in the comments lately. I just wanted to apologize and thank you for making these videos, and putting up with people who act like I did at times
Neat tip on the ballast resistors thanks!
How have you got no replies in 12 years lol XD?
Love your tutorials and videos as well!
I enjoy your electronics videos. Excellent
Dave is Steve Irwin of electronics -- he is genuinely excited by all these little circuit-populating critters! Love the channel.
Watching this 10 years later... man, you haven't aged much!
It is the best, shortest ans practical explanation I have ever seen. Great work Dave with this video.
One of the most detailed videos, I have not seen a more detailed video than this one, I am a novice when it comes to electronics, but videos like these is what novices like myself need to look at, only a few videos talk about esr and esl which is why I have understood why we use a ceramic capacitor, but I still not understood why do we use a capacitor, and if they are in parallel to the load them the load is getting twice the energy, amazing knowledge shared thank for being my guru just like another channel afrotechmod.
Dave is my Hero. I am an EE with 35 years experience and still learning a lot from Dave...
I'm a fan of your videos. I went back to this earlier video and what I really appreciate is your insight and experience. You hit on all the best aspects of capacitors in this video. Thank you.
your tone of voice is simply awesome. not just children but also adults will enjoy your happy voice.
"the damn things are flammable... and this is generally considered a bad thing" lol
a good thumb nail sketch of capacitor types and properties. A practical look at the implications of them. Plus delivered in the Dave way! super fun, informative, and entertaining.
So much enthusiasm. Must be precious tutorials back then.
Thanks for reviewing the application and construction of components. You've got an excellent working grasp of the E.E. field. And I (for one) appreciate that you keep the Simpson analog meter parked within easy reach. Mine's approaching 35 years old.....and it looks like it will survive my passing(plus it fits right in with the WW II radio collection). Thanks again....btw, I'd recommend Global Specs. update service for anyone who desires to stay on the curve(especially with RF components)
I'm Australian, I can't help it.
I've actually had more people say the like the accent than those who dis it. So based on the current poll, I'm not going to voice-over school. Sorry.
this guy's sentences always end with a '!'
I can't unhear it.
Bingeuw
It makes listening to the videos so much more engaging lol
1:12 begs to disagree...
This guy is brilliant and knowledgeable.
Great video Dave!! Some considerations about caps in series: the resistances will be an additional load to power. They will heat, so choose and position them wisely, so that they don't worsen the thermal weaknesses of the caps they are helping. If the current leaking from one of the caps in series is not minimal, the next cap will overload (it will go above its max rated v) even with the resistors network. Cheers from Italy you crazy Aussie bloke!!!
you need 6 stars. Info is so exceptionel good. Thank you over and over again.
And Dave knows (see his Tektronix 2245B refurb video) that you have to install them in the right direction!. Electrolytics do explode - Dave just about jumped through the ceiling... Just given you a little bit of the business, Dave. Super helpful video, Dave. Thanks.
Any chance we could get reissue of episode 33? Your production quality has improved dramatically since this was published, great work Dave, you are such an inspiration!
You make electronics soooo easy to understand! :o)
Wow! I thought I wouldn't find another great teacher after Bucky, but I like the looks of this dude! He looks like a good teacher already
This man really knows his caps!! Enjoyed watching it as I have to do a re-cap soon on an old piece of audio kit.
Great job! I learn something from every one of your videos.
Thanks for the tip of putting both a PolyPopylene and a Polyester cap in parallel to achieve better temperature stability, Dave.. :)
I might try that in a Tube radio rebuild I am planning of doing in the near future, the insides of those chassis can get pretty toasty so I wonder if it would have added value doing it like you mentioned (on selected, perhaps more sensitive, spots inside the circuit).
Greetings from the Netherlands
Seeing that I spent 60k for a eet associate's degree. I understand everything u said. Scraping computer part to melt down. After I get a trash can full. Love the video. Thanks
Very insightful. I'll definitely refer to these vids.
one Australian to another... ascent means squat, keep doing your thing, you are very inspiring.
Arrrr, the days when TH-cam had a 10min limit.
@daddyoca69 Use the parametric search tools on Digikey or Mouser or Farnell. It's often easy to start by narrowing down by something like footprint size and price as a first order.
this should be renamed to "the problems with most capacitors"
Well done. lots of good info on caps in just 10 minutes.
Dave: "These things are horrible! Don't use them!"
*finds electrolytic capacitors everywhere*
You are a lot smarter than most of us humans. Thanks for always sharing and posting.
You are lucky enough to have two commenters that care enough to leave constructive criticism. We are both saying we like you and we want you to be better. IMO (and probably James'), removing the HRT-like thing you do would make your video go from pretty good - to excellent.
I am not offended. I take any and all feedback, thanks.
Not everyone thinks the HRT is annoying or distracting. More people have commented that they LIKE the way I talk and deliver, and DON'T want me to change. How do I please everyone?
Yes, I'm happy with the way I talk, it's ME. I think it would be better to let my delivery naturally change as I get more experience.
I'm trying to eliminate the fillers because they take up valuable time, but that's been hard to do with no script.
Thank you ,i have learned so much from you and you are a really great teacher.
10 years old, It would be great to have video, please Dave!!!
You're the Steve Erwin of electrical components.
An important thing to remember when designing circuits is to 'derate' the capacitors. That is, use capacitors whose voltages and perhaps capacitance (when bypassing, for example) are higher than the maximum necessary. The amount to derate is a function of (among other things) the capacitor material and maximum ambient temperature. Derating is necessary since the capacitor will, as Dave mentioned, breakdown over time. Aluminum electrolytic caps are the worst so far as this goes.
@spelunkerd Yes, all electro's should have a negative marking.
This is excellent. Helping me navigate components.Thankyou mate. New subscriber.
Excellent tutorial on capacitors. Thanks!
Hi Dave! A video about ultracapacitors would be awesome!! Thanks for this one...
"The force is strong with this one" great infomative vid bud
Whilst aluminium electrolytic can be horrible, if used well within their rated specs that can give a useful reliable life for many years. I agree they can dry out after many years, but today equipment is not normally expected to be used for that long anyway.
I might be silly to change it in your everyday life.
But it makes sense to reduce or remove anything that might narrow your audience if you are presenting something to the public.
Take it like saying "um" and "uh" a lot when speaking. In speech class, they teach you to eliminate fillers because it's a distraction for the listener. James and I are just saying that the HRT-like thing is a distraction.
I recently blew one up, I connected 28v to a board and it was probably not rated for that. I had my head above the board to see if the leds turned on and there was a loud bang and some metal piece hit my forehead pretty hard. I don't wanna know what could have happened if I got it in the eye.
Lol,old story,had one of those shooting a hole in our gypsum ceiling as a kid :) Later one shot my resin plated hollow door! They shoot through your casing and still be lethal! The velocity is really like or better(better??)that of air guns!
"The higher the temperature the shorter the life ..." Bad news for Queenslanders.
I am now absolutely terrified of electrolytic capacitors by the way.
I swear I have a heart attack every time I build a circuit and I hope I put the electrolytics in correctly. It always freaks me out when one blows.
Ferretsnarf
You always have to respect a component that can kill you even when the power is off. Opening some project cases is like opening a box of scorpions. Have you seen those super caps with hundreds of Michael Faradays in them? Shudder.
Ferretsnarf I just fucked up a PSU a few weeks ago. I did a stability test (left it on for 2 hours with some load on it) and a cap exploded with a really loud bang. 30 cms from my head. While watching a movie. It scared the living shit out of me :D
Once I hooked up a 12v DC device to 20v AC supply on accident(they used the same plug). All 4 reservoir caps popped one after the other. I thought it was the fourth of july.
Thanks for the great video. I have a qestion on the temperature of electrolytic caps: I'm trying to find non-functioning caps on a pcb. None show any visual signs of damage (bulging etc.), so before I make the effort to solder them out to test them individually, I was wondering whether I could see if they are within their temperature specs by measuring the temperature while in use, using a infrared temperature measurement device (pointed at the caps, one at a time). Am I going somewhere with this, or does it make no sense and there is just no way around soldering and testing all caps invididually?
PS: Keep up the good work!
"sodder" is one of my pet hates!
Funny, that's the only way I've heard it pronounced in my area of the world in 50 years. A world separated by Common Languages eh?
@@wadepatton2433 in America its sodder and everywhere else pronounces the 'l'
GREAT videos Dont stop making them
Great vídeo, tks Dave,..
What about mylar caps? Also, back in my military days, all caps were received and stored with lead taped together to prevent a recovery recharge. Large caps for transmitter power supplies had shorting straps for the same reason. Haven't seen that used in years though.
They don't sing 'Anchors Aweigh' 'Anchor's Away' for nothing...
The best part about electrolytic and tantalum capacitors is blowing them up. Now if you want to turn them into firecrackers, you have to be careful, but it can be fun !!!! 😁😁😁
Don't assume that low ESR aluminum electrolytics will work universally with all low-dropout voltage regulators. Many of these regulators need a _specific range_ of ESR to prevent oscillation. Regarding mica capacitors, NPO ceramics rival temperature stability, but don't generally sustain as high a voltage as the mica types.
Hee, hee, so those lines inscribed on the top are a "pressure vent"? I thought the pressure vent was the rubber part on the bottom, which is designed so when it blows, all that corrosive juice gets sprayed onto the PCB, and into the other components!
@Bracerjack Thanks. Hopefully more tutorial videos to come.
Thanks for the info on the capacitors. I have seen many circuits that have a slot for two capacitors and they only install 1. know I know what to do to make these this last longer.
you can use them as a paper capacitor even after electrolytes goes off but with low capacitance
Hi Mr Dave Jones I would like to see you make a video on how to solder film capacitors like polypropylene as film can melt with heat I looking forward to solder thru hole polypropylene but scared about it's melting point
This is and oldie but a goodie!
nice job , easy to learn
I only ever use electrolitics and tantalums, so I guess I have a few things to learn.
Amazing intro!
eevblog, you are hilarious and i learn a lot!
Electrolytic capacitors mounted on electronic circuits of devices manufactured after 1990 can remain unused for as long as possible without this disuse causing failures and depolarization in the electrolytic capacitors?
depends on what voltage and amp hours youre looking for
HI, when you talk about using two electrolytics in parallel do you mean two separate caps or would a dual cap such as a 50/50 at 450V work the same? I hope my question is not to long winded. lol I am referring to the old four input Marshall amps. Up till about 1968 or so they used two 100uf/350V caps in series. But then they changed to two 50/50 caps in a parallel/series configuration for the first two stages. The first one for the OT center tap and the second one for the power tube screens.
Thank you for the videos. They have been most helpful.
Good informative video....I have a question..I have a power amp and the filter caps are 7500uf ...if I replaced with 10000uf ... what will happen...and which brand is good for filter caps
4:37 I was looking over a D-link DFE-530tx 10\100 NIC and there is an AAT1201 voltage regulator with 2 x(47 uF aluminum electrolyte caps) together like in that diagram except there was no resistors nearby through hole or surfacemount. can you get away with this or is this a bad product design.
@NawnExistent I'll take that as a complement!
Great video Dave , thought it might help me fix my Dyson motor, it has one of these x1 self healing capactors attached to the motor, now my question is , is it possible that this capacitor is defective like a short and therefore the motor doesnt work or is it there just for protection and even if the capacitor is defective the motor should still work, not sure if I'm making much sence
I have a question about using electrolytic capacitors in power supplies. Is there any way of knowing if you should use polarized or non polarized ? Or do you just try it and if it doesn't work change it ?
good job mate hope more from you
I'd love to see you do reviews of PC power supplies mate (build quality/efficiency etc). There are some decent sites out there but yours would be a lot more entertaining, to say the least. Reading reviews is rather boring, it'd be a hell of a lot more interesting to actually watch them.
Just a thought!
why in tube electronics (guitar amp) oil capacitors or vintage cap make sound better than modern type? thanks
What we perceive as *"better"* (warmpth, brightness, wow, flutter, etc) is mainly because our brains are *anolog* not digital. Just as vinyl will sound "better" (to audiophiles) than a CD recording.
HUBBABUBBA DOOPYDOOP SACD eats vinyl for breakfast
Salvo Pulvirenti In some applications they match the design philosophy.
They don't... but they make a better choice along with styroflex and foil caps. The downside is, they all come expensive... but have great life time expectency.
Homework: "Do not use electrolytic capacitors unless you're familiar with their use."
Me, a first year EE student: "I wonder what that's about?"
Dave: "They are polarized and can explode."
Me: "Got it. Sticking to the ceramics."
he eternal on its form hasn't aged a single day in 10 years
That was excellent.
Ever hear of budroc capacitors?
I have a 55 Gibson junior
I wonder if it’s original
No ceramic caps:(
its hard to find good how to's videos on here like this, this so fare is the best Tech channel on youtube. love it and lots of good infor. but I do have a question I hop you can help with do you know of a good schmatic for an low voltage cut off circuit and a high voltage circuit I'm building a charge controler and I want to protect both ends both high and low. voltage cutoff.
Thanks for the nice video. How can we distinguish between x and y main capacitors? There are also min capacitors with grey packages (rather than yellow), is there any difference between their type?
The proper way to respond would be "Thanks for your feedback; but It's my accent, and I like it. It's common in Australia, here's more info [(insert wiki link)]" A response like that would probably curb all further discussion.
P.S.
I'm glad none of the Aussies I know have HRT ;)
The last thing you said about Electrolytic Capacitors was that they have "10-20% Recovery something like that", what are you talking about exactly?
great vid as always the question we all want to know gigabyte or asus?
How do you calculate the resistance value to go in parallel with series electrolytic caps. I thought you just picked a high value like 100k. I have 650vdc with two 47uf 450vdc in series across it. Thanks Duane
alternative title: Roasting Electrolytic Caps for 6 minutes
What does he mean by high pulse?
+Zambia95 In a Switching Power Supply for example, current is turned on and off very very fast by a pair of fast switching transistors which creates lots of fast electrical pulses, (blips on the waveforms) or whatever you want to call them (some are higher and more spurious than others) this is also bad for cheap capacitors. Ripple is small unwanted AC current on top of the DC which is generally bad as it can cause the capacitor to fail prematurely and degrade the pure DC output and damage electronic components further up the chain. Thats why is best to always use the best quality caps you can find for those particular applications (I think that's right -correct me if I'm wrong Dave)
MG Samps When you say "higher and more spurious," do you mean they have a higher amplitude than the majority of the other pulses?
Generally no (in a SMPS) if the circuit is well designed, but it does happen and so sometimes a HV or High current spike will present on the capacitors and that is not good. Some capacitors are designed specifically for these purposes, and therefore cost a lot more.
The term "high current/voltage Pulse" in electronics can be related to many different types of applications. I think what Dave basically meant that you need to choose the correct type of component (capacitor) for a specific job and that using cheap parts in certain circuits like SMPS will make them fail early. (like the bulging cap scenario) Manufacturers of most electronic devices don't always use the best parts available due to costs.
Is there any reason to use an SMD 1uF Tantalum cap over a ceramic? The datasheet for the part I'm using calls out a Tantalum, but i believe it's just due to ceramic capacitors historically not being able to generate higher capacitances. These days you can get 100uF, even 500uF ceramic capacitors.
Are there labels on electrolyte capacitors to tell neg from pos polarity? Can you tell which side is which just by looking at where the wires go?
if they are 220 uf 100v caps. Are they the same type, and if all the values are the same than it shouldn't matter. Remember polarity!
I've been keeping old electronic devices from the early 90's and 2000's example snes console, ps2 slim and crt tvs will these devices have problems with aluminum electrolytic capacitors if stored for a long time?
In glorious low-def.
Hey cap man, I just want to know how I can explode a 2400MFD 450 VDC cap. All I have is a 15KV Transformer. I tried a parallel connection across secondary and lost voltage. In series, it just passed through. Do I need to rectify to DC ?