This circuit was found in a documentation of the time. It consists of a receiver with two RF stages for the medium wave band. The audio power is on the order of 2 W.
This 70 kHz oscillator is used to erase tapes in pre-recording. The circuit is from 1968 General...
This circuit acts as a VU-meter when connected at the output of any audio amplifier, triggering a...
When the voltage exceeds the value given by the zener, this circuit from a 1990 documentation...