Found in RCA documentation from the 1970s, this circuit is intended for firing thyristors in inverter circuits. The components are from the era and the operating frequency is 10 kHz.
This microcontrolled null adjustment for operational amplifiers was obtained in a Linear...
This continuity tester for low resistances was found in an English magazine from 1978. The circuit...
When the input voltage is higher than 2/3 of the power supply voltage the green LEDs glows. When...