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.
The great advantage of the circuit shown in the figure is the fact that its frequency is...
Found in American documentation from 1969, this circuit produces a pulsating waveform being...
Found in an old Elektor, this circuit uses two 7-segment displays to indicate the volume of an...