6W Warble-Tone Siren

Posted on Apr 8, 2012

This circuit uses a CMOS chip and a VMOS FET amplifier for 6 W of audio output. 18 W of audio can be generated using

6W Warble-Tone Siren
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a + 24-Vdc supply. IC1A and IC1B are used as a 1-Hz oscillator. IC1C and IC1D form a 1-kHz multivibrator that is gated by the 1-Hz signal from IC1A and IC1B.

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