We found this version of the automotive tachometer in a 1980s publication. Variations from other sources appear elsewhere in this section. The indicator is a 0 to 1 mA milliammeter.
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...