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Friday, December 25, 2009

Car Burglar Alarm Circuit


This is a burglar alarm for cars.If some one opened the car door.The alarm will activate.Normally this circuit provides 5 second to open the door and close it but If somebody opened it more than that the alarm will activate.To turn the circuit on S1 should be closed.If you want to open the door more than 5 seconds.You can deactivate the alarm by using S2.Exit delay time can be adjusted by using R1 and C1.




Note

# This circuit operates with 9v power supply
# Be careful when you work with high amp batteries

1 Comment:

sweatha said...


You have provided an nice article, Thank you very much for this one. And i hope this will be useful for many people.. and i am waiting for your next post keep on updating these kinds of knowledgable things...

Home Automation in Chennai
smart home in Chennai
Home security in Chennai
Burglar alarm in Chennai
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