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Power Supply Design Question

Discussion in 'Power Electronics' started by rdoty, Sep 2, 2015.

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  1. rdoty


    Mar 6, 2010
    I need to design a high power supply e.g. 30-50 VDC @ 25 - 40 A. The supply is not variable, that's just the range e.g. 875VA to 2000VA. There are two approaches, either using a toroidal transformer which is pretty straightforward or switch-mode. Most power supplies today seem to be switching but rarely are they high power. Would it be more practical (and economical) to go toroidal or are there suitable switch-mode designs? Weight or size are not a factor.
  2. davenn

    davenn Moderator

    Sep 5, 2009
    how about something like these .....

    at those prices you could never build one anywhere near that price

    for a linear supply, the transformer alone is likely to cost $400 give or take a bit
    then you have casing, rectifier, capacitors, filter inductors etc

    you probably wouldn't get much change out of $800 - 900

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