the principle of gas stove flameout alarm

Published:2011/8/19 7:02:00 Author: | Keyword: principle, gas stove, flameout alarm | From:SeekIC

It is very dangerous if the gas stove is out and nobody finds it.Although thetop gas stoveis with automatic flameout control and protection device, the price is too high to spread. The gas stove flameout alarm shown in the picture can monitor the stove and send out the alarm.Core component is LM324 quad op-amp.IC1-1 is a comparator, IC1-2 is a follower; R4, R5 are the photosensitive resistors, the resistance changes with light intensity; AN is a reset switch for discharging the electric charge of capacitors C1, C2.



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