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 learned something on your video today: high rising terminal. I didn't know it was a "thing." I had noticed it myself because the hosts of several of the channels I watch regularly are from "down under." Of course you shouldn't change who you are. One reason you have so many views could be your voice and enthusiasm. It is a certainly a combination of personality and content. I often watch videos I'm initially not that interested in to here you go on and on about it. Top notch EE info BTW--high level and detailed and at the same time real world.
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.
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
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".
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.
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!
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)
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
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.
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.
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.
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!
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
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?
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.
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
@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.
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.
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.
hi..could you please explain what the different types of caps are like in audio projects.. id like to know the audible difference in film and ceramic of the same value..is there any? rob.
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 ?
Hi, I'm wondering if you can help me figure out what kind of capacitor and its specifications. The marking on top of the can is FP / 17Be / 271 / 16. Thanks...
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?
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
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
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!
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 ?
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.
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.
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 I have question Im about replace capacitors 220 uf 100v but capacitors came bigger than those on board does the size of them matter or its just matter of space on board thank you for reply
i have electrolytic capacitors mounted on electronic devices from 1990, how long can these devices remain unused and without the electrolytic capacitors failing due to disuse?
Can you replace a polymer cap with a electrolytic cap and vise versa if the microfarad and the volts are the exact same? I ask because on the original xbox the same revision motherboards I have seen both for there 1500uf 6.3v caps
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
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.
I am not sure about those bipolar electrolytics made of two normal caps connected antiserial. What is a capacity of this system? I thing it´s not C/2....
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.
How important is ripple and impedance? I have an old motherboard that has a bad electrolytic cap that I would like to replace. Now, I don't have an ESR meter (yet) but since caps are pretty cheap, I figured I'd just replace a bunch of them but I can't exactly find specific specs for them (OST 470uf 16v 105c, 1000uf 10v, 1000uf 6.3v, RLP 1000uf 6.3v). I found some replacement suggestions but I'm a little concerned about choosing them without all of the info.
Generally, your worries are about the voltage and polarity. Measure the voltages and note the polarity during operation and buy the largest µf caps that will fit in that space while at least having an equal Or higher V rating.
