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amr mohamed
 
 


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Occupation: : 369
Date of Birth : 1994-09-29
Join Date : 2010-11-12
Age : 22

PostSubject: Touch alarm circuit   Mon 04 Apr 2011, 7:31 am


Touch alarm circuit




Description of Service

Simple electronic circuit to give voice
Warning when you touch the door is used to protect homes



Circuit diagram




Elements
Service

R1 = 100K
D1 = 1N4004
R2 = 4K7
C1 = 47μF/16V
R3 = 10M
IC1 = 555 Timer
P1 = 100K
Q1 = 2N3904, 2N2222


Or any transistor with the same specifications


cheers

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