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More  Buffer Amplifiers   Bistable Multivibrator or Flip/Flop Circuits  
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.

Click on Drawing Below to view PDF version of Schematic

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

More  Buffer Amplifiers  
Bistable Multivibrator or Flip/Flop Circuits  
Flashers & Blinking Circuits

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