New consulting relationship with GreenTecAuto begins
What actually goes wrong with the batteries????
A look at todays Hybrid and EV battery packs
Battery packs exposed
Keeping Warm In New England
Plugging into the SUN
Making a small solar concentrator
Building MIMA and the plug in adapters
Converting a telephone truck to electric
DIY dual pulse Capacitor Discharge Spotwelder
Cell Miller mounting the components
Welding beautifully
More snubbing
Beefing up the switching board
Rebuilding the welder
Need better welds
Welder first test
Making some cells for weld testing
More parts of the process
New weld head
Spotwelding fixture #1
More energy
First weld testing
Making a spot welder??
Chevy Bolt EV joins the family
Getting in shape while making electricity
Replacing gasoline with solar electric lawn equipment
What is Genesis One?
How to stop the aging process DIY
MIMA Install Day 2005 a Big Success!
Building a hybrid car grid charger
Tapping into the Wind
Expanding MIMA with the Distribution board ( users projects )

Beefing up the switching board

Beefing up the switching board
Beefing up the switching board

I got the replacement mosfet, and some precision 10 ohm resistors. I also got some high speed high power schotty diodes to dump the big HV spike into the capacitor bank instead of letting the voltage stress the mosfets. This is possibily an overkill, but I will be making millions of welds with this thing, and don't mind spending a few bucks getting things as solid as I can.
This buss will connect with a copper buss bar to the capacitor positive buss. Any voltage greater than the capacitor bank voltage will conduct through the diode and buss bar right back to the capacitor.
That's the plan, will soon see if the plan works.