The human body induction alarm cat diagram

Published:2011/3/31 3:18:00 Author:Jessie | Keyword: human body induction alarm cat | From:SeekIC

When debugging, first adjust oscillating circuit part,don't access mosfet to circuit temporarily. As long as oscillation part welding and correct, itwill send out Mimi quack, meanwhile leds can glow normal, changing the feedback capacitor C can change oscillation frequency, small capacity, high frequency, whereas low frequency. Then access mosfetto circuit, switch on the power, HTD calls appear, it's dueto human body's induction.



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