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 was found in an Electronics World magazine from 1990. The circuit can be mounted...
I found this circuit in a Popular Electronics from 1992. The circuit shows how we can use two...
This small signal amplifier circuit was found in Motorola's 1969 documentation. The FET and the...