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Circuits designed by David Johnson, P.E.
Last Updated on:
Friday, March 12, 2010 12:07 PM
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Beeper & Buzzer Circuits
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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 |
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Click on Drawing Below
to view PDF version of Schematic |
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