>>Kill a MRF141G in the experimenting and it's a big hole in your pocket.
>
> You have that right, I alreayd killed my one sample, so had to pay for the
> replacement. I know why it died, so I hopefully won't repeat that.
I've just noticed the prices Henry are selling for on ebay. It's
not as big a hole as it used to be. I think I paid close on $500
for the first one I bought years ago.
One thing with fets that's sometimes missed in designs - always
have some dc path from gate to ground. A 100k resistor at the
transistor is what I usually use. Then, if the bias supply is open
for any reason it should survive. When learning I lost transistors
to bias pots with intermittent contacts, or ones without endstops
which go open for part of the rotation.
Steve
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