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DIY Capacitive Discharge Welder

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Description

Nothing Fancy. Just a raw, simple, single shot CD welder to allow me to build a few battery packs.

Bottom line: A 1 Farad capacitor will work for pack building but for hotter and more consistent welds, I want MORE POWER!!

Check out my upgrades to this build here:

https://www.youtube.com/watch?v=OtCiorlYP1U
TIME CODES:

SCR GATE WIRING:
http://www.youtube.com/watch?v=TNclCrfsgJQ&t=1m37s

GATE TRIGGER SWITCH :
http://www.youtube.com/watch?v=TNclCrfsgJQ&t=3m20s

CAPACITOR SELECTION AND POWER CONSIDERATIONS:
http://www.youtube.com/watch?v=TNclCrfsgJQ&t=4m25s

CHARGING:
http://www.youtube.com/watch?v=TNclCrfsgJQ&t=6m26s

WELDING @ 15.10 VOLTS:
http://www.youtube.com/watch?v=TNclCrfsgJQ&t=9m28s

WELDING @ 15.90 VOLTS:
http://www.youtube.com/watch?v=TNclCrfsgJQ&t=12m25s

BLEED RESISTORS:
http://www.youtube.com/watch?v=TNclCrfsgJQ&t=14m25s

NUGGET TEST ON WELDED AAA PACK:
http://www.youtube.com/watch?v=TNclCrfsgJQ&t=14m53s



Components:
Nippon Chemi-con 1 Farad 16 Volt capacitor
Chinese 100 Amp silicon Controlled rectifier
30"X2 8 gauge wire
6 gauge solid wire for electrodes
tactile/momentary switch scavenged from a wifi router
Charging:
15 Volt 1100 milli-amp DC converter
boost converter
Constant current, constant voltage buck converter

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