I made my own Capacitor at CHEMI-CON!

✅Thank you for sponsoring us, Nippon Chemi-Con!

To create my own electrolytic capacitors, I visited Nippon Chemi-Con's Kanagawa Research Center .
I performed many processes I had never experienced such as etching, forming, and winding of aluminum foils for capacitors.
How is the performance of my hand-wound capacitors going to be?

◤Contents◢
00:00 Opening
02:10 【Preprocessing】Wash Aluminum Foils
03:19 【Etching】Extend Surface Area of Aluminum Foils by Etching
04:28 【Formation】Form Dielectric Layer on Surface of Aluminum Foils
05:58 【Foil Slitting】Slit Aluminum Foils into Product Size
07:18 【Lead Connecting】Attach Lead Wires on Aluminum Foils
08:24 【Winding】Wind Aluminum Foils Manually
09:38 Attach Rubber Seals
09:59 【Electrolyte Preparation】Mix Materials of Electrolyte
11:19 【Impregnation】 Impregnate Electrolytic Capacitor Elements with Electrolyte
12:15 【Sealing】Put Electrolytic Capacitor Elements in Cases
12:29 【Reforming】Put Capacitors in Constant Temperature Bath to Repair Damaged Elements
14:02 【Sleeving】Wrap Aluminum Cases with Sleeves
14:40 【Performance Test 1】Measure Capacitance of Handmade Capacitors
16:36 【Performance Test 2】Test Capacitors in a Module
19:59 Ending

■Business inquiries

[charleslambert]

I once made an electrolytic cap for a physics lesson. I formed an oxide layer on some kitchen foil with a battery and a container full of dilute washing powder, for some reason. I obviously didn't clean the foil well enough first because i could see fingerprints where the oil from my skin blocked the current afterwards. then i rolled the foil up in an old jam jar full of baking soda solution alongside the other electrode which was untreated foil. We tested it with a coulomb meter and it did hold a little bit of charge.

[NotIT]

I love how the AI voiceover pronounces anode and anodic about 5 different ways.

[Robert.K]

"It's like a cooking show" had me smiling. :)

[ivolol]

I think asking Nippon Chemi-con, for what their more unusual, specialised or unique capacitors are, in a prepared interview, might make for a good video if you do any more in the future. What are their coolest products they are most proud of, and why? Maybe you are able to talk to one of their engineers.

[PS-vkbn]

Wow! What a useful and interesting video. I worked as an electroplater two decades ago. The procedures you demonstrated in the first third of the video are very similar, if not identical, to the processes used in a typical electroplating facility 😄.

[David-mozq]

Any liquid can be used as an electrolyte as long as it's electrolyte

[joseppuig]

The Coke capacitor when used in audio circuits may give a sweet sound signature.

[albertogregory]

Neat video, amazing you got inside chemicon!

[Noble_Nexus]

Great demonstration. There's a lot of good information in your presentation. I particularly appreciate your attention to detail and thoroughness. Thank you.

[gfr]

16:30 I think the ESR difference is due to unprecise (manual) winding, difference in tension and position

[sylvaind]

Wow! Thanks. That's a great explanation!

[sameckert]

Fantastic content!!! Pepsi will out preform Coke in every category. This includes cap electrolytes. Take the Pepsi cap challenge!

[Derpy]

This guy’s computer English is grammatically perfect and sounds pretty good. If it’s not a computer, it’s still good.

[theoldbigmoose]

Phenomenal lesson in capacitor making. Thank you Denki for your detailed explanations and editing. I enjoyed, and learned, from every minute!

[Diagoras_de_Melos]

Very informative and interesting, thanks!

[mylittleparody]

That's an awesome video!
Thanks for sharing!

[care_packages]

Fantastic video, really interesting to see the process.

I got a capacitor with the sleeve on the wrong way round a few months ago - I was right to guess that the long/short leads would be the truth, not the sleeve. It wasn't made at this factory!

But even if that English narrator is working for free, you're still paying him too much. Seriously, how arrogant must you be to not just look up how to say words you obviously don't know, that appear dozens of times in the script.

[TonyBarr]

I loved this video! Thank you! Also, I admire your dedication to safety with the white lab coat and safety glasses!

[eecm]

Hello, that was very informative and interesting, thanks

[professionaloverthinker-x]

Thanks for the amazing capacitor video.