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13368 Views 5 Replies Latest reply: Jun 3, 2014 7:05 PM by Eddymannmex RSS
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Apr 10, 2014 9:03 AM

Piezo electric mic



last weekend I built this rather simple yet effectice preamp for a piezo electric pick up. I came across this idea of amplyfing minute signals from a piezo disk from a youtube video. I do not own this schematic or idea. It belongs to one of my inspirations: Collin Cunningham.


The MPF-102 N-channel FET Rf amplifier is becoming obsolete and hard to find. I figured there must be a way to acheive such acoustic clarity with a more standard discrete semicunductor. Does anybody know what changes I could make?


This is a great circuit and works like a charm. Please pass it on

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