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Help me find a solution

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Nigel Goodwin

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Leolight said:
I need a circuit diagram of a 12v, 9v, 6v, 3v, 1.5v. using a battery for backup when Power fails.
Your question is far too vague!, please be more explicit, and give details of the current required, what the supplied devices are, how long they need power for.

The voltages you mention look to be just a simple 'wall wart' type power supply, which only outputs one of those voltages, depending how it's set.
 
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