The purpose of this circuit is to measure the intensity of audio signals. We found it in the September 1990 issue of Radio Electronics magazine. The circuit works as a S meter.
This circuit was found in a Popular Electronics of the 90s. It operates a third brake light that...
September 2015 – It can be found at Mouser Electronics the new drivers of high voltage LEDs HV9805 from...
We found this circuit in documentation from the 1970s; The circuit uses Japanese transistors of...