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.
This circuit generates signals from 0.01 Hz to 10 kHz, but uses unusual components today. The...
A high-frequency square wave oscillator using an LC-tuned circuit is shown bellow. The upper...
September 2016 - It can be obtained from Mouser Electronics coils for inductive battery chargers...