Thread: Question DIY mains power supply
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Old Nov 27, 2012, 06:29 AM
abenn is offline
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Letchworth, Great Britain (UK)
Joined Jul 2004
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Question
DIY mains power supply

I have a small project (a UV light box) which I power from a 5S A123, but I would like to convert it to mains power. Can someone point me to a simple DIY circuit for a mains-powered psu with a fixed output of 18v or so and a 1A capability, please?

The wall-wart 5v supplies for phones and tablets don't seem to use a transformer -- is there a DIY device that can be used to safely drop the voltage from mains 230v to what I need without a bulky transformer?
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