With a single LED on the scale, this voltmeter has low consumption. The circuit was found in the March 1992 issue of Radio Electronics magazine.
This beat frequency oscillator or BFO was found in an American 1980s documentation. The circuit is...
This circuit is from the 1990 Motorola Linear Databook. The circuit can be implemented with other...
In the figure we have the simple way of controlling a load or having a signal from an optical...