This well-designed bistable configuration is for educational purposes. We found it in the September 19873 Radio Electronics magazine. The transistors are types from that time.
This circuit, from the 90's, is intended for operation with vinyl record players of the time, as...
This circuit, in fact, what it does is a reactivation of the batteries through a brief pulsating...
This circuit, for signals up to 1 MHz, is based on an RCA operational amplifier. The circuit was...