This mono circuit for 10 LEDs was found in the January 1991 Radio Electronics magazine. It is powered by 12 V.
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,...