This fuzz effect for guitars was found in an American 1980s documentation. The transistors may be the BC549 and should be battery powered for noise sensitivity. Diodes are commonly used.
Found in RCA documentation from the 1960s, this 60 V regulator has a 100 V input and a current of 1...
We found this circuit in a 1969 General Electric documentation. The circuit uses transistors of the...
The circuit in the figure is suggested by Murata for an uPD75380 microprocessor and is based on a...