Salvaging Electronic Parts: Power Supply 

Thank you, you are too kind.

Interesting, I will have to try that. Thank you.

Does de-noising mean silencing? If so how does a coil make the motor quiet?

@@anthonygoddard428 well it depends which spectrum you're listening to and how good your ears are 🙂 It's about suppressing HF noise. -- not about the actual mechanical motor noise.

@@anthonygoddard428 😂😋😋😋😋

Curiosity as a kid pays off

Legend lol

It's been awhile but I think the big black one is a full wave bridge.

@@tsbrownie thank you my friend I appreciate it,, I'm enjoying what I'm doing because I got a little bit too much time on my hands since they decided to retire this old horse, so it takes up some of my time but all of my time is spent out in my shop, my whole life is I've worked 2nd 3rd shift, and I see no reason for it to change sure is peaceful at this time day nobody calling nobody wants anyting and if somebody knocks at your door you just pretend you're asleep, lol!

It's a joule thief and it is a device to take all the remaining energy out of a "dead" battery. Here's where I built one. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-IV3lArO0_0U.html

I mention that I personally don't go after those things. I have a few and rarely use them.

It's a good question. The answer is too complex to write out here. Most computer power supplies put out 5 volts at some pretty good amps. Just beware you need to insulate the supply so people are not exposed to the high voltage AC involved.

@@tsbrownie yes but the psu is to bug as i like to use only the 5 volt into a small plastic case to have on my desk

For that I use a "wall wart" or if I need more power I find a power supply from an old laptop or similar with the voltage I need. You can look up a LM7905 voltage regulator. It's easy to use and they give a sample circuit.

a bit late to answer, good question, better use a USB charger for getting 5VDC, it is small and probably easier to use. Probably all power supplies like in the video have a High Voltage part of about 75 % of the pcb area and a Low voltage part where the +5V +12V and possibly -12V and other voltages are made. at 3:00 in the video you see the 3 little 4 pin IC's that are opto couplers, which bridge the isolation internally by using an Infra red transmitter and receiver pair for the feedback, meaning if your +5V gets to high it lights the transmitter more, and the receiver conducts more, lowering the transmitted energy in the High voltage part. All of the 75% of the High voltage part can be connected to the 400VDC capacitor and can kill you, or give you a nasty shock at least. The voltage in this capacitor can remain high for a long time too, so if you unplug it, do not expect it to lose this charge any time soon. (see his disclaimer at 0:12) he touches the top of this capacitor at 0:19, which is the aluminium can top probably still isolated if it is not damaged, so relatively save to do, just do not put the other fingers below the pcb while you have it plugged in, or just after you unplugged it, you are probably at least hurting yourself pretty badly.