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Laser Door Alarm Circuit - Electronics Projects Circuits
瀏覽：569
日期：2025-06-15
This laser door alarm is based on the interruption of Laser beam. A low cost Laser pointer is used as the source of light beam. When somebody breaks the la ... Capacitors C1 & C2 would make the circuit unreliable..the IC as well as transistor will see sho...看更多
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