Circuit - POWER REMINDER BEEPER - Circuits designed by David A. Johnson, P.E.


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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

Beeper & Buzzer Circuits

Also see Circuit in DiscoverCircuits' Hobby Corner

HIGH SOUND OUTPUT BEEPER CIRCUIT
I you need a real loud beeper, this circuit delivers about 110db (12 inches away) from a 9v battery using a single inexpensive C-MOS IC. An off-the-shelf piezoelectric beeping device is driven at resonance to insure maximum efficiency. By changing the control IC to a 74AC14, the same circuit can operate from 3v and 1.5v batteries. Published in Electronic Design, Aug 5, 1993

Click on Drawing Below to view PDF version of Schematic

Beeper & Buzzer Circuits

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