Miniature Loop Alarm

This entry was posted on Thursday, November 27th, 2008 at 2:08 pm and is filed under alarm system, home security alarm, กันขโมย.

As you can see a clear pattern of circuit is quite primitive and consists of two identical transistor switches. Each has its own alarm led and they combined with bovine 82 db buzzer. The two 1N4148 diodes are used to prevent the signal from a sensor to trigger so light-emitting diodes. In the sensors used are wire loops or normally closed switches cane or even a combination of both. You could, for example, tie wire capture your suitcase and place trust move to the door of your hotel room.
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วงจรกันขโมยระบบลูป จุดเซ็นเซอร์ 2 จุด ขึ้นไป เมื่อจุดใดจุดหนึ่ง มีปัญหาก็จะส่งสัญญาณให้ออดส่งเสียงดังให้ได้ยินรับรู้ได้ครับ
ดูวงจรและอ่านต่อ Link Miniature Loop Alarm

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