This circuit was found in a 1964 Electronic Design. The components are of the time, and modern equivalents can be used. Note the multi-emitter transistor.
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...