> Your description is exactly what I was thinking of.  I'd be very interested
> in seeing what you've got so far.

Hi Ted,

I'll try to get a web page up about it, and post the link when it's ready.

> Have you got the H bridge FET drive stuff fully worked out?  I have some
> specific ideas in this area, seems to me that it should be possible to make
> a very high current H bridge by using MOSFETs that can have on resistances
> of 0.03 Ohms!

The best thing I've found so far for MOSFET H-bridges is to drive them
with the IR2112 chip(International Rectifier, you can get them at
Digi-Key). Lets you use all N-channel MOSFETs. Remember that your losses
are quite often governed by the back diode voltage, so the on resistance
is not that important. At 50% duty cycle the diode is the biggest sucker
of power.

Cheers,

Bob

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