Using a component of the era, this 1968 Mallory circuit uses an output transformer whose characteristics were not provided in the original documentation.
This circuit was found in a 2006 publication. It uses discrete components and CMOS that are still...
We found this circuit in the November 1992 issue of Radio Electronics magazine. The circuit has...
This simple circuit, from a 2006 documentation, activates a 12 V lamp in the event of a power...