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Old 24th May 2014, 05:18 PM   #1
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Default AC to DC power supply schematics?

Hi all

I'm new to these forums, and I am planning to build an AC to DC power supply. I am looking for a very high end design.

The AC supply voltage is 230V at 50Hz and the output needs to be 12V at 1A.

My only priority is that the AC to DC converter resembles an ideal battery as much as possible with the absolute minimum ripple and noise.

The size of the unit will be 400x120x400, so there is a lot of space for a transformer and capacitance.

Does anyone know of a very good schematic I could use?
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Old 25th May 2014, 08:47 AM   #2
AndrewT is offline AndrewT  Scotland
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go to TNT.
They take you through about 4stages from very simple but adequate, to a bit more complicated but very good.
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Old 25th May 2014, 09:37 AM   #3
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A quick look at the LM317 datasheet will show you how to achieve what you are after.
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Old 25th May 2014, 09:38 AM   #4
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Andrew probably refers to the crash courses in power supplies detailed here.
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Old 25th May 2014, 09:56 AM   #5
AndrewT is offline AndrewT  Scotland
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Thanks Sha,
Here's p1
Solid State Power Amplifier Supply Part 1
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Old 25th May 2014, 10:39 AM   #6
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Thanks for your help folks, I will have a read through those pages and develop a schematic from there.

It's a coincidence that the first reply was from another Scot.
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