Heat release infrared sensor induction control circuit 2

Published:2011/5/6 1:25:00 Author:Jessie | Keyword: Heat release infrared sensor, induction control | From:SeekIC

Photoconductive resistance R2 is used to detect environmental brightness, when the environment is bright, photoconductive resistance's value is smaller, it makes the pin 9 on low level, the output terminal 2 of pin IC1 is stable low level, switch tube deadline. If it needs to control circuit also can be used when environment is light, it just needs toremove R2. IC's pin 1 is thetriggered choice terminal, whenpin 1connects to high level, circuit works on repeatable; when pin 1 connects to grounding, circuit works on locking triggered.



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