Household flammable gas leakage automatic ventilation and alarm circuit

Published:2011/9/14 21:37:00 Author:Christina | Keyword: Household, flammable gas, leakage, automatic ventilation, alarm circuit | From:SeekIC

The circuit is as shown in the figure. It is composed of the gas sensor detection circuit, the amplifier, the relay control exhaust fan circuit, the analog sound circuit and the AC step-down rectifier circuit. It can be used in the family kitchen, the leakage alarm of the flammable gas in the bathroom.



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