This White LED Emergency light uses a Relay for the automatic working when power fails. When the Mains power is available, the relay allows the battery to charge and when the power fails, the relay switches on the emergency light. Too simple working ,and no complicated circuits. This Circuit is designed on request from Thomas PD.
This simple White LED lamp switches on when its surroundings turn dark. It is an ideal portable lamp in picnic sites. It uses solar power for charging the battery and an LDR for automatic switching.
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