Fredric Effects Harmonic Percolator

Harmonic Percolator The Harmonic Percolator circuit is simple and versatile, and careful component selection can yield fascinating results. This modified version of the Harmonic Percolator circuit uses entirely silicon transistors manufactured 40 years ago in the former East Germany, and clips the signal using a weirdo East German diode array. Needs: 9VDC 50mA Center Negative