This indicator or VU meter for stereo amplifiers was found in a 90s Radio Electronics. The integrated circuit used is uncommon today.
This circuit found in a 1993 Electronics Hobbyst Handbook has a very simple configuration that can be used on...
The circuit is from a Radio Electronics from August 1989. The cells used at that time did not have...
This well-known circuit version of the siren was obtained in a Colectro Handbook from the 70s. The...