Precious cultural relics radio pursuit device circuit

Published:2011/7/26 3:13:00 Author:Christina | Keyword: Precious, cultural relics, radio pursuit device | From:SeekIC

The circuit is as shown in the figure. It is composed of the vibration type wireless voice launch circuit, the wireless receiving and demodulation circuit. If you put the transmitter circuit board in the protected cultural relic, when someone moves the historical relic, the press type switch SA will reset, at the same time, the mercury switch SK conducts because of the moving, the VT1 conducts, the sound circuit and the wireless launch circuit get power to send out the voice alarm circuit. When the wireless receiving and demodulation circuit receives the alarm circuit, it will send out the sound of catch the thief! and you can track the thief.



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