This TV remote control receiver uses a ratchet system to activate an old drum-type selector to change channels. A common system at the time. The circuit is from a Radio Electronics from February 1961.
This two-transistor emitter-coupled oscillator circuit with capacitive feedback was found in the...
This simple circuit produces sound effects given by the 4093 oscillators and switches LEDs...
This circuit uses two sensors that are placed at the intersection of a miniature railroad, causing the LED...