This indicator or VU meter for stereo amplifiers was found in a 90s Radio Electronics. The integrated circuit used is uncommon today.
This circuit was found in the December 1995 issue of Electronics Now magazine. The circuit...
The basic idea of this 1989 circuit is to trigger a relay for a while when a call signal occurs on...
Found in Radio Electronics from the 90s, this circuit uses a 741 and can be changed to other...