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 variable frequency oscillator was found in an old American documentation. Transistors allow more...
Found in the September 1982 issue of Radio Electronics magazine, this circuit triggers a relay...
Using a 106 series SCR, this circuit was found in the May 1971 Radio Electronics magazine. The...