LEARNING ABOUT CAPACITORS BY ROLLING YOUR OWN ELECTROLYTICS
https://hackaday.com/2023/10/24/learning-about-capacitors-by-rolling-your-own-electrolytics/?fbclid=IwAR1QsjftV1TuFMXxX_CeaNuj3D5eb_0Vfzoq09romjcYS5XaPYQteCBgrZU

Ever wonder what’s inside an electrolytic capacitor? Many of us don’t, having had at least a partial glimpse inside after failure of the cap due to old age or crossed polarity. The rest of us will have to rely on this behind-the-scenes demo to find out what’s inside those little aluminum cans.

Perhaps unsurprisingly, it’s more aluminum, at least for the electrolytics [Denki Otaku] rolled himself at the Nippon Chemi-Con R&D labs. Interestingly, both the anode and cathode start as identical strips of aluminum foil preprocessed with proprietary solutions to remove any oils and existing oxide layers.

I made my own Capacitor at CHEMI-CON!
https://m.youtube.com/watch?v=UQu__pO9bZ0

Replacing capacitors is no substitute for repair. It is not a panacea or cure all. Reasons to recap are discussed, as well as horror stories of recaps gone bad.

Replacing Electrolytic Capacitors
https://www.youtube.com/watch?v=iPCAYOz80Xw

This video illustrates a method of “recapping”–removing and replacing electrolytic capacitors on a circuit board.

Failing capacitors can cause a computer or electronic device to malfunction.

Short little video on common mistakes seen when recapping (replacing capacitors) vintage electronics. This would include vintage stereos, radios, equipment, CBs, ham radio receivers & transmitters, calculators, computers, you name it.
Hopefully this will provide you some tips and hints to use when you go to recap your piece of vintage gear.
Topics include:
- Mistaking Factory Glue for Leaking Capacitors
- Factory Boards and Manuals Marked Wrong
- Capacitors Installed Incorrectly
- Using Larger Capacitors Than Specified
- Buying Electrolytic Capacitors off Ebay
- Replacing Everything at Once

Through experiments, I compared different types of electrolytic capacitors such as solid and hybrid.

0:00 Brand Name Changes to Chemi-Con!
0:33 Which Products Use Eleltrolytic Capacitors?
2:26Difference Between 3 Types of Aluminum Electrolytic Capacitors
3:04Type 1: “Commonly Used” Aluminum Electrolytic Capacitor
4:34 Structure and Equivalent Circuit of an Aluminum Electrolytic Capacitor
5:40Type 2: “Low ESR” Conductive Polymer Aluminum Solid Electrolytic Capacitor
6:45 Type 3: “Get the Best of Both Worlds” Conductive Polymer Hybrid Aluminum Electrolytic Capacitor
7:16 ESR (Equivalent Series Resistance) of Electrolytic Capacitors
8:49 Lifetime of Electrolytic Capacitors
10:09 Same Capacitance, Different Ripple Voltages
12:19 Reverse Polarity (*Do Not Try This Yourself*)
13:26 Operating Temperatures of Electrolytic Capacitors

Modern firearms might seem far removed from the revolvers of the Old West, but conceptually, they still operate on the same principle: exploding gunpowder. But as anyone who has put too much voltage through an electrolytic capacitor knows, gunpowder isn’t the only thing that explodes. (Yes, it isn’t technically an explosion.)

[Jay Bowles] wondered if it would be possible to construct an electrically-fired weapon that used used a standard capacitor in place of the primer and powder of a traditional cartridge. While it would naturally have only the fraction of the muzzle velocity or energy of even the smallest caliber firearm, it would be an interesting look at an alternate approach to what has been considered a largely solved problem since the mid-1800s.

I Built An Electric Capacitor Revolver!
https://www.youtube.com/watch?v=4Fy9bZEufx0