On Wed, 20 Feb 2002, Dave Dilatush wrote:

> The circuit DOES work, and the MOSFET body diodes do NOT conduct.

Cool.  I understand now.  Neat idea, I think I'll kick this project up a
couple of notches on the list!  Time to order more parts...  8-)

> I have two IRF512's connected to a 12V transformer and a light bulb
> running on the workbench right now; the circuit gives full-wave ON/OFF
> control (I can turn it on and off just by touching the gates with my
> fingertip... neat!), with no current other than leakage flowing when OFF
> and no voltage drop when on, other than that due to Rds(on).

So am I correct in thinking that turning on just one of the gates will run
the lamp at about half intensity, while the other MOSFET gets warm?

> flowing.  Think about it: if it were otherwise, how would MOS analog
> switches ever work?

Beats me, IANAEE, remember?  8-)  But now I understand how they do!

> * FAD = Field-Assisted Diode  :)

I just try to avoid NEDs -- Noise Emitting Diodes (SNAP!!)

Dale

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