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The car burglarproof alarm (1)

2017-01-17 09:51  
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The car burglarproof alarm (1)
The working principle of the circuit The car burglarproof alarm circuit consists of the time-based integrated circuit IC, resistors R1 and R2, capacitors C1 and C2, diodes VD1 and VD2, relay K and burglarproof switch S1, see as figure 7-67. Usually, the driver puts the hidden burglarproof switch at the point of 2 , the single steady time circuit consisting of IC, R1, R2, Cl and C2 does not work, the car can start and run normally.