Wireless motorcycle burglar alarm circuit

Published:2011/10/24 2:32:00 Author:May | Keyword: Wireless, motorcycle burglar alarm | From:SeekIC

The relay K and SCR VS are used to control the transmitter circuit's power. IC1 forms the alarm signal circuit. And the transistor V and its peripheral components form the radio frequency oscillator circuit to transmit alarm signal. In the waiting state, the switch S1 is connected, and SB1 is disconnected (ie, the front lock is locked), K is in the release state, then the alarm transmitter does not work. When the lock is opened (ie SB1 is connected), VS is triggered for conduction, K is pulled in to turn on the transmitter power. SB1 is switched on, K-2's normally open point is self-locking, and only alarm S1 disconnecting can end the alarm at this time. When K acts, its normally closed contact K-l is off.



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