This UPS circuit was published in the March 1985 issue of Radio Electronics magazine. The components used are still common, although some may be difficult to obtain.
This circuit was found in Motorola's Linear Interface ICs of 1993. The integrated circuit used is not...
This configuration was found in a publication for radio amateurs in 1979. The two integrated...
This circuit makes use of a 741 single source operational amplifier to measure resistors on a...