Using a capacitor as a sensor, this circuit was found in the 1989 Radio Electronics Experimenter magazine. The circuit must be assembled in a shielded box.
This circuit is from a cookbook to timers. The circuit is triggered by an external signal and,...
The project presented consists of a flasher alternated with relay, which can be installed at the...
This circuit was obtained from a Hands-On Electronics, an American magazine from January 1987. The...