This circuit was found in the September 1992 issue of Radio Electronics magazine. The circuit does not use a transistor to drive the relay and has no adjustments.
Pressing S1 stops the circuit. This circuit was found in the October 1992 issue of Radio...
This bass booster preamp is from an English publication (1966). We can mount it with more modern...
This circuit was obtained in a documentation from the 80's. The components used are of the time,...