This circuit was suggested by an Electronic Design from the 90s. Its purpose is to detect resistance relationships in circuits with resistive sensors for control purposes, by firing a relay.
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....