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Last Updated on: Tuesday, April 01, 2014 04:34 AM

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LED FLASHER NEEDS ONLY 1.5 VOLTS
Judging from the numerous references I have received, this electronic circuit, hobby circuit seems to be rather popular.  Many published circuits which flash LEDs needs 3 or more volts. This electronic circuit uses only a single inexpensive C-MOS IC and flashes the LED for a full year on a single 1.5 volt AA alkaline battery cell. The circuit uses a charge pump technique to provide the LED with the needed voltage.  This electronic schematic will only work on red, green and yellow LEDs.  It is not be able to flash white LEDs.

Click on Drawing Below to view PDF version of Schematic

Circuit 1.5 LED Flasher Circuit, version A designed by Dave Johnson, P.E. (June 4, 2000)

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