This circuit is from a Hughes documentation from 1968. The components are of the time and the RC network determines the operating frequency of the circuit.
The UM3562 integrated circuit is a dedicated circuit found in many toys because it generates three types...
This circuit keeps a flashing LED when a balcony lamp, for example, is turned off. As a result,...
This circuit is from an 80's publication. It makes use of small 6 V x 50 mA incandescent lamps....