Light touch alarm circuit
Source: InternetPublisher:笑流年 Keywords: Alarm circuit SCR switch Updated: 2021/02/09
Shown is a touch alarm circuit . Just touch the switch Sl. Then the thyristor SCR can be triggered to turn on the circuit, and the audio
oscillation signal is amplified by the transistor V to drive the speaker. The alarm will continue to sound until the power is turned off once and the system is in the waiting
state again.
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