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 constant current source is from the LM11's own factory manual used in the application. The circuit is...
The purpose of this circuit is to detect whether a coil has shorted turns. The coil must be fitted...
This medium wave radio must use a high impedance piezoelectric, crystal or magnetic phone and the...