Coal gas accident alarm circuit diagram

Published:2011/4/18 2:34:00 Author:Rebekka | Keyword: Coal gas accident alarm | From:SeekIC

The circuit is match with gas stove. When the flame appears, it provides a stable airflow for the main nozzle gas relay. Radiation caused by the intermittent flame flash will produce low frequency signal. The amplified signal will produce pule to charge the capacitor. IR5 will be turned on and drive the alarm by relay. There isn't flame flash or pulse, the condenser discharge and IR5 will be stopped.



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