With this circuit it is possible to control the intensity of a signal digitally. The circuit is from Radio Electronics from February 1981. The power supply must be 18 V.
This transmitter is modulates a infrared light source from an audio signal. Applications include a...
This turntable filter was found on an 80's Elektor. The circuit makes use of operational features...
This circuit is from a Radio Electronics magazine from May 1989. The power supply must be...