In the figure we have 3 oscillators with logic gates that can be triggered by external logic signals. The circuits were found in the Radio Electronics magazine of April 1987.
This guitar sustain circuit uses only two transistors and can be powered by a 9V battery. The...
In the figure we have the way to make the three-phase control of a motor using opto-diacs. The circuit is...
This circuit can be used in traffic alarm systems. The relay trips when the light falling on the...