This circuit consists of a stereo audio compressor. We found it in Radio Electronics magazine from October 1968. The circuit uses an opto-coupler made with a neon lamp and LDR.
The circuit shown is an AND gate with three inputs using a comparator of the four existing in an...
This circuit, which can only be used with incandescent lamps, is adapted to the common wall...
This passive circuit was found in the March 1995 issue of Elexctonics Now magazine. The circuit is for...