We found this circuit in an Electronics Now from the 1990s. The circuit crashes when light strikes the sensor. Instead of the alarm a relay can be used to drive higher power devices.
This FET mixer in a common source configuration was found in a 1980s documentation. The circuit...
This circuit is from an 80's component manual. The components are from the time, but the circuit...
Indicated as a joke or challenge this circuit shows how it is possible to control two lamps using...