This simple SCR control was found in the December 1987 issue of Radio Electronics magazine. The circuit uses a well-known C106 but can be used in equivalents of the same series.
This low current parallel or shunt type regulator was found in documentation from the 60's. The...
This circuit is found in a 1975s documentation for radio amateurs. It was developed to recognize a...
The displayed relay operates with an audio signal applied to the input. The transistors can be...