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I want to build a 20A power supply

I want to build a 20A power supply
file0.jpg

  1. Ben#0000

    There are various easy ways to do it, but I saw this

  2. Ben#0000

    I have a few questions

  3. Ben#0000

    Please what’s the work of the transformer here

  4. Ben#0000

    My guess is that is for galvanaic isolation
    But from the bridge rectifier, the AC is now converted to DC
    Which is connected to the mosfet, and then IC does the fast switching
    But I’m confused, since transformers only allow AC

  5. wafa_ath#0000

    The IC and MOSFETs convert DC to high-frequency AC. This AC passes through the transformer, allowing isolation and voltage conversion. The transformer doesn’t work with the initial DC, but with the AC created by the switching circuit.

  6. Ben#0000

    Ok, thanks,

  7. Ben#0000

    So where does the actual DC convention to the output come in play?

  8. Ben#0000

    Oh shot, I see another bridge rectifier at the output end

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