My function generator which came a long way with me went up in a plume of smoke. I had to replace it and bought a Rigol DG1022. It's a nice generator but pricey. I am going to use this generator to play with different waves to see if I can get the correct waveforms for the pulse arc welder. I am thinking of designing a new board from scratch, its already halfway drawn on a piece of paper :). The Budget is also a little low on funds and I will start to buy components as soon as possible. This welder will use much smaller and easy to get capacitors.
These things take time and lots of work so don't expect to see it before the end of this year.
ROGER CARR LET ME KNOW THATFUTURE ELECTRONICS SELLS THE IRFP2907PBF MOSFETS FOR $3.60, THANKS ROGER.UPDATE: FUTURE ELECTRONICS CHANGED THEIR PRICE TO $6.00.....DO NOT BUY FROM THEM!!!!