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Motorcycle anti-thief alarm (13)

2016-09-02 21:38  
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Motorcycle anti-thief alarm (13)
The principle of the circuit The motorcycle anti-thief alarm circuit is composed of the anti-thief monitoring circuit, the voice circuit and the high loudness alarm circuit, the circuit is as shown in figure 7-96. The anti-thief monitoring circuit is composed of the mercury switch S2, the resistors Rl-R4, the capacitors Cl, C2, the transistors Vl-V3 and the diodes VDl. The voice circuit is composed of the diodes VD2-VD7, the resistors R4-R6, the voltage stabilization diode VS, the filter capacitor C3 and the voice IC ICl. The high loudness alarm circuit is composed of the diode VD8, the step-up drive module IC2 and the high loudness alarm HA.