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Step-down voltage without transformer?

Discussion in 'General Electronics Chat' started by ym2k, Sep 22, 2004.

  1. Reloadron

    Reloadron Well-Known Member Most Helpful Member

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    What am I missing here. You are starting with 220 VAC mains power and you said when you rectified the 220 VAC and added a capacitor to filter it you got about 300 VDC. I explained why in a previous post. Did you measure the output of the rectifier without the capacitor in the circuit? As soon as that circuit is loaded that 300 VDC will drop to the rectified value of the RMS signal you are starting with.

    Now you say you need the 220 VDC to drive IGBT modules so you can make 220 VAC @ 50 Hz. You started with 220 VAC and maybe I assume wrong but 50 Hz.

    Ron
     
  2. Hero999

    Hero999 Banned

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    Can we see the bigger picture?

    What exactly ware you trying to do?

    What's the input and output voltage and frequency?

    What are you trying to power?

    Are you just trying to convert the mains supply to a different frequency?
     

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