This power supply protection circuit was found in the December 1978 Radio Electronics magazine. The SCR is triggered by shortening the power supply and quickly blowing the protection fuse.
The A3906 integrated circuit from Allegro MicroSystems (www.allegro.com) consists of a single-step motor...
This circuit, already explored in other publications, uses the signal from a strong station to...
Signals of up to a few tens of kilohertz can be generated by this circuit found in a European...