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

Master Category List - Dave's Circuits
 Last Updated on: Friday, August 29, 2008 02:34 PM

Flashers & Blinking Circuits
FLASHING LED ADVERTISING BADGE #1
I have seen numerous flashing light badges at trade shows and conventions. They are often handed out as gifts to promote some business. The devices often use inefficient circuits, which cause the battery power source to be quickly depleted. My circuit is simple but efficient enough to provide months of continuous LED flashing. It also has a tiny push-button switch to turn on and off the light flashing, extending battery power.

Circuit Advertising Badge Flasher designed by Dave Johnson, P.E. (March 26, 2002)

Click on Drawing Below to view PDF version of Schematic

Flashers & Blinking Circuits

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

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