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 circuit, found in a 1964 US documentation, consists of a selective amplifier that lets only...
This circuit serves as a reference for the components used and the time. The circuit is from 1967...
This stereo circuit with the 2002 integrated circuit. The power is 6 W per channel with 16 V of...