This first-order high pass filter is applicable to any operation requiring a dual power source. It was found in the March 1997 Electronics Now magazine.
This circuit is from an American 1967 documentation and can be implemented with modern equivalent...
This circuit was obtained in a 1998 publication, but it can be easily assembled. The circuit...
This passive circuit was found in the March 1995 issue of Elexctonics Now magazine. The circuit is for...