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previous: Tracy Soft Start question ? -- 6/27/2000 4:21 AM

MOSFET Follies

6/27/2000 12:01 PM
R.G.	MOSFET Follies I keep pestering people to use high voltage MOSFETs for "utility" functions like this. See my web page (GEO) on "MOSFET Follies". It's a little more convenient to use an N channel MOSFET like the IRF820 and put it in the transformer CT return, as it is now down around ground instead of floating up around B+, so you don't have to do floating drive circuitry. You can use it for standby and automated protection as well.

6/27/2000 12:01 PM

R.G.

MOSFET Follies

I keep pestering people to use high voltage MOSFETs for "utility" functions like this. See my web page (GEO) on "MOSFET Follies".

It's a little more convenient to use an N channel MOSFET like the IRF820 and put it in the transformer CT return, as it is now down around ground instead of floating up around B+, so you don't have to do floating drive circuitry. You can use it for standby and automated protection as well.

Replies:

Stephen Conner R.G.Surely when the... -- 6/27/2000 7:52 PM