AUTOMATIC_EMERGENCY_LIGHTING_UNIT

Published:2009/7/9 22:53:00 Author:May | From:SeekIC

This unit uses a Nicad battery to provide power to an emergency lighting setup. When power fails, T1 becomes forward biased, which lights L1 and L2. The batteries are normally kept charged. When power is on, T1 is cut off and it keeps the lamps extinguished.



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