Found in Mallory documentation from 1968 this circuit uses an integrated circuit from that time. The circuit has a flat response from 10 Hz to 700 kHz.
The circuit is from a Radio Electronics magazine from October 1987. The Triac must be equipped with a...
The integrated circuit used is not common today and the voltage gain is unitary. The circuit is...
This source with two symmetrical output voltages was found in 90s Radio Electronics. The 22 V...