Ralf's Piezo-Amp
Ralf's Single Channel
Our good friend Ralf (http://www.ralfschreiber.com/) has shown us his nice new workshop module for making a single channel piezo pre-amp during HOME MADE 2020.
Some discussion on how to use a linear pot that reacts logarithmically by adding / chaning one of the resistors?
Boards
Schematic
Extra Puffer for Batterie and DC-Power supplie
> bei batteriebetrieb noch 100uF-470uF elko als puffer,
> bei netzteilbetrieb mindesten ein rc glied R10/220uf dazu!
dusjagr's case
SMD 3-Channel Version with Hammond case
coming soon...
Working on github: https://github.com/sgmk/3Channel-PiezoAmp