This automotive circuit was obtained from an 80's schematic from the integrated circuit factory itself. The voltage regulator is still common, but the operational amplifier is of the time.
March 2017 - Vishay's new SiRA20DP N-channel MOSFETs for synchronous grinding applications, DC /...
This circuit was obtained from an English magazine from 1976. The signal from the circuit should be...
This circuit has a type of bias called "virtual earth" providing good gain, given by R2. The...