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Dave's Circuits
Circuits designed by David Johnson, P.E.

Master Category List - Dave's Circuits
Last Updated on: Sunday, July 27, 2008 07:40 PM


Flashers & Blinking Circuits    Indicator Circuits
 
1.5V LED FLASHER VERSION B
To squeeze even more energy from a alkaline battery cell, this circuit adds two transistors to a circuit similar to the above design to boost the efficiency. A small 1.5 volt alkaline N cell should flash the LED for a full year. It too uses a "charge pump" technique to provide a LED the needed voltage.

Click on Drawing Below to view PDF version of Schematic

Circuit 1.5V LED Flasher Circuit designed by David Johnson, P.E.

Flashers & Blinking Circuits    Indicator Circuits

Master Schematic Category List - David A. Johnson, P.E.
 

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