This very low current circuit was found in the April 1995 Electronics Now magazine. The frequency should be chosen for maximum efficiency according to the small transformer used.
This circuit was found in a Radio Electronics of July 1984. It consists of the traditional power...
This circuit is a shield for microcontrollers and computers drivind high power loads. In the...
This humidity alarm, rain or leakage was found in a 1992 publication. The sensor consists of a printed...