This circuit makes use of a specific 80's component and was found in an American manual of the time. A matrix keyboard allows you to select one of several music programs.
This circuit was found in the August 1992 issue of Radio Electronics magazine. The circuit can be...
This simple circuit with LDR was found in the Radio Electronics magazine of July 1992. Any...
Wien Bridge This Vienna bridge oscillator generates a sinusoidal signal whose frequency depends...