Circuit design help - power supply - Non FIRST

[Al Skierkiewicz]

Josh,
What you need is a DC coupled power amp capable of offsetting the zero crossing of the sine wave to some voltage. This is possible with audio power amps but not at the power levels you have stated in your intitial specs. Your requirements will only give you a possible 4-5 volt peak to peak signal at 30 amps or somewhere close to 200 watts. A couple of function generators and a big stereo power amp would do the trick with a variable DC suppply to make the offset but would only make power up to about 50kHz.
What you are asking to do is dangerous in most situations particularly for someone without previous experience in high power amplifiers capable of the frequencies you have stated. I hate to restate the obvious, but you do realize the flamability of hydrogen? At the quantity that this process would appear to generate, you are going to realize a rather large volume of hydrogen gas.