Voltage stepdown without wound transformer? (my device seems to not have one...)

Discussion in 'General Electronics Chat' started by RogueRose, Jun 5, 2015.

  1. RogueRose

    Thread Starter Member

    Oct 10, 2014
    I have a computer PSU that accepts 120/240 and auto detects and is capable of 1200 watts (next model up is 2000 watts) and I can not see a transformer in this thing! I have not come across a psu that doesn't have a transformer of some sort (sometimes multiples). I want to take it apart but it is pretty small and I fear reassembly correctly. For any that question, this is a server PSU by one of the top server manufacturers so it isn't some cheap chinese knockoff.

    How is this possible or am I missing something!?
  2. JWHassler


    Sep 25, 2013
    There's a transformer in there: it will be running at a much higher-than-line-input frequency, though.
    As a result it will be of much lighter construction than a 50/60 Hz unit.
    Here are some pictures