This high impedance step suggested by an English publication can operate up to 1 MHz with 1 V rms output. Input impedance is 1 M ohm.
We found this circuit in an American documentation from the 90's. The circuit makes use of general...
This circuit provides a pulse train of 4 MHz or at another frequency determined by the crystal during...
This effect for guitar was found in an English magazine from 1978. The transistors can be the most...