We found this circuit in a 1966 documentation. The circuit is intended for a door opening system by the headlight of a car. The sensor is a photo-FET, an uncommon component today.
This circuit incorporates a thermostat. The circuit is from Motorola's Linear Interface ICs from...
We found this circuit in a technical documentation from the 70s. The MC1555 is nothing more than...
This circuit was found in a 1967 RCA manual. The transistors are of the time. The adjustment is made to...