Quality CD resistance fine spot welder for welding thin metal or wires, for example SNN54, " x " x 25 feet spooled nickel strip, , , $
Capacitive Discharge (CD) Welder for Battery Tabs: Welcome to my latest Battery tab (or strip) can be purchased from various sources on the internet battery packs use either copper (with a nickel plate) or pure nickel.
Phoebus Sparos on 30th May 2013 For what kind of weld spots do you use this?
It also establishes a good, high conductivity area for the second, or welding pulse. The ESR of your capacitors and quality of wiring connections can make a big difference to the amount of current that will flow, so it can be hard to predict current at a given voltage, and it's possible that each of your IRF3205s are seeing hundreds of amps - which would explain why they are blowing.
Due to vibration over time, a short can develop across the positive central "button" electrode, and the circumferential negative "shell" that is very close to it. And the - Terminal of the capacitors bank conneting their drain pinds to the negative electrode of the welder.