This circuit was found in a 1964 Electronic Design. The transistor may be a current equivalent of general use. The frequency ranges from 100 to 150 Hz.
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...