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.
The integrated circuit used in this 80's differential amplifier is a quadruple version of the 741...
We found this two stage transistor amplifier circuit using RC coupling in a magazine published in...
June 2017 - Bosch's new low G triaxial sensors can now be obtained from Mouser Electronics. The...