Why not LED burn after showing alarm,as Alarm volt is 11-
13,But LED is of3 volt,why it isnt Burn??






Why not LED burn after showing alarm,as Alarm volt is 11- 13,But LED is of3 volt,why it isnt Burn??..

Answer / pillay

You are right but the voltage to the LED is reduced by
connecting a resistor in series or a few LED are connected
in series so the voltage across each LED IS about the rated
voltage.

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