Power Outage Warning Circuit

5 to 15V supply - LED indicator Adjustable time detection A circuit capable of detecting even a very short power outage, can be useful, mainly if embedded into existing appliances like mains powered counters, timers, clocks and the like. At switch-on of the appliance, the LED illuminates, but pressing on P1 it goes off and remains in this state until a power outage occurs. When power supply is