This circuit, suggested by an Electronics World of 1969, keeps a blinking LED for a while when a power outage occurs. Time depends on capacitor C1.
This circuit was obtained in an old American publication from 1974. The supply must be made with 5 V...
Currents of a few milliamps are enough to drive loads up to 500 mA with this circuit. The...
Published with a power amplifier in the January 1985 issue of Radio Electronics, this circuit...