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  1. #1
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    220V AC to 5V ,3A DC

    Hi

    This is my first post to this forum. I'm struggling to design a transformerless power supply. It connects to the mains (220V AC) and I need to get 5V, 3A DC. The reason for me not inserting a transformer is that I've got very limited space to place the final design in. Yeah I know it's very high current and that's why I'm struggling.

    Any ideas how to go about?

    And doing voltage division with caps isn't working for me either, I can't find high voltage caps with a high farad reading. The largest I could get was 4.7uF 600V and that doesn't work when I'm pulling 3 amps.

    Any suggestions or comments are welcome :)

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  2. #2
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    220V AC to 5V ,3A DC

    Switched mode power supply with a high frequency transformer is the only feasible way.



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  3. #3
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    Kripton2035's Avatar
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    220V AC to 5V ,3A DC

    you won't get more than some hundreds mA with a transformless power supply. that's it.
    now you can take a look at smps as FvM said. they are now very compact.



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