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The car burglarproof alarm (2)

2017-01-15 12:08  
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The car burglarproof alarm (2)
Here is to introduce a car burglarproof alarm which utilizes the pulse signal generated when the engine oil meter and the sensor are working, the circuit is simple, and it can be used in both petrol engine and diesel engine.The working principle of the circuit The car burglarproof alarm circuit consists of the transistors V1 and V2, resistors R1-R3, capacitor C and burglar switch S1 and so on, see as figure 7-68. When the burglarproof switch is at the gear of 2 , the former circuit is working normally, the burglarproof circuit is not working.