Inside an American emergency light (with schematic).

Inside an American emergency light (with schematic).

This American style LED emergency light was sent by Andy for exploration. It’s very neat, I like it. That might be because it’s so different from the normal UK versions and has a certain “American appeal” to it.
The design is simple and functional, and the choice of red LEDs means that it should put in a good long service life. Changing the battery pack is easy and the circuitry is simple, so it should last a long time if the transformer runs cool.
The transformer is tapped for 120V and 277V for use with standard supplies or the higher voltage lighting circuits. Make sure you always insulate unused taps on transformers as explained in the video.
The case has no screws and just snaps together which is an interesting approach.

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