car burglar alarm timer


Posted on Feb 4, 2014

Car Burglar Alarm timer alarm system circuit, model to economize. This circuit convenients for to set up in an automobile. usually switch at set up keep with automobile door will the circuit closes. But in case of car owner opens in and out while note as a result have no result anything, because of the transistor model PNP to still don`t work. B


car burglar alarm timer
Click here to download the full size of the above Circuit.

ecause of 9 pin have high voltage. But when switch the door any one open the circuit exceed time delay keep 5 pin of IC NE556 have low voltage to fully drive transistor circuit give relay work. The system will order to give the horn a car talks at one time to come to immediately. But if we shut the door a car or close S1 system stop work again.




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