I'm thinking of using a piezo through diode (I have Schottky diodes) to raise one side of a small capacitor in hope that it would drive enough charge into the FET gate to open it. The cap would shield the FET from the piezo spike. IF it could work, what ballpark capacitor would I be looking at? I …

Switching a TTL level FET with a capacitor.

MarkT May 10, 2018, 6:46pm 7

To the source. Use a zener or you'll just blow the FET immediately.

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