The automobile burglarproof alarm (1)

Published:2011/7/23 3:19:00 Author:qqtang | Keyword: burglarproof alarm | From:SeekIC

The working principle of the circuit The trigger alarm emitter circuit consists of the electric switch circuit, regulated filter circuit and encoding wireless emitter circuit, see as figure 7-78. The electric switch circuit consists of the burglar switch S2, thyristor VT, transistors of V1 and V2, diodes of VD1 and VD2, resistors R1-R3, capacitors of C1 and C2, regulated diode VS1 and so on. The regulated filter circuit consists of the 3-terminal regulator IC1 and filter capacitor C3



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