Simple emergency light

Following circuit is a simple emergency light.
when it connected to power supply(adapter) the battery be charged and when the electricity be turn OFF or the adapter be disconnected the LEDs be turn ON automatically .
its cheap, simple and useful.
you can use a power LED rather than use several LEDs.
R2 must be jumped when a power LED used. (as you see in follow video)


Simple emergency light


Simple emergency light

Lokasi: United States

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