High loudness alert tone generator circuit diagram

Published:2014/1/24 20:10:00 Author:lynne | Keyword: High loudness alert tone generator circuit diagram, 1N4001, TWH8778 | From:SeekIC

The warning tone generator circuit is simple, stable and reliable performance, working voltage 6V-12V, suitable for the siren in the car, motorcycle use. The circuit mainly by the sound IC KD ~ 9561 TWH8778 and switch integrated circuit composed of work by KD-9561 audio output warning signal after TWH8778 high current switching IC processing amplified loud speaker to promote sound the alarm. Components Selection: IC with KD-9561 sound IC, KD-9562 can also use sound IC, the wiring required to make sound an alarm tone alarm signal. IC2 use TWH8778 switching circuit, when the supply voltage is 12V, the speaker BL should choose 8Ω, 3W speakers or a dedicated number above drum speaker, current limiting resistor R1 resistance 300Ω ~ 510Ω, DW optional 3V regulator, VD is the circuit protection diodes can use 1N4001. High Loudness warning tone generator circuit shown in Figure:



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