Egg Timer - Electronic Circuits and Projects - EduTek Ltd
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This means that for that moment, pin 2 is at 0v, thus triggering it. As C1 charges through R1, the voltage across it increases, thus raising pin 2 to release the trigger. This takes about a second. As soon as timing starts, the output of the timer pin 3, goes high, thus turning off Q1 and silencing the buzzer for the duration of the timing period. logonation
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