The photo FET is not a common component today. In this 1964 Electronic Design application we have a light switch circuit.
This circuit was obtained from the November 1989 issue of Radio Electronics magazine. The circuit is...
One 40108 Schmitt inverter or one 4093 gate can be used as a half monostable to be triggered by...
The sensor used in this transistor is a common silicon transistor and the operational admits...