Very Loud 3v Powered Beeper -- August 16, 2009

Published:2012/9/9 21:00:00 Author:Ecco | Keyword: Very Loud , 3v, Powered Beeper | From:SeekIC

Getting a high sound intensity from a piezoelectric type beeper is not easy when the available DC supply is only 3v. The circuit below is not only efficient but produces a very intense sound. The circuit combines a voltage boost section with a resonant feedback network. The voltage applied to the piezoelectric wafer is about 40 volts peak to peak. The result is a circuit that generates an attention getting sound without drawing a lot of current. Source: discovercircuits



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