PWM Power supplies

Discussion in 'General Electronics Chat' started by RodneyB, Mar 25, 2013.

  1. RodneyB

    Thread Starter Active Member

    Apr 28, 2012
    633
    13
    I have been looking for PWM power supply circuit diagrams. That Reduces from220 Volt down to 15 Volts.

    All the circuits I have been able to find are from 12Volt to 220 Volt. Any links or the correct terminology will help immensely.

    Many thanks

    Rodney
     
  2. tshuck

    Well-Known Member

    Oct 18, 2012
    3,531
    675
    You are looking for a switching regulator..
     
  3. crutschow

    Expert

    Mar 14, 2008
    13,003
    3,232
    Is this 220V AC or DC?
     
  4. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,980
    744
    What about an ATX psu, 220v AC to 3-25V dc?

    or do you have a circuit in mind?
     
  5. RodneyB

    Thread Starter Active Member

    Apr 28, 2012
    633
    13
    ultimately when I understand the technology I want to build a 220 volt AC to 13.8 volt DC power supply
     
  6. RodneyB

    Thread Starter Active Member

    Apr 28, 2012
    633
    13
    I see all new power supplies don't have a huge transformer in them I am trying to learn an understand this technology
     
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