300VDC to 20VDC Voltage regulator?

Discussion in 'General Electronics Chat' started by electronewb, Feb 20, 2013.

  1. electronewb

    Thread Starter Member

    Apr 24, 2012
    260
    3
    Any such thing? I'm wondering how it would be possible to have 300VDC and bring it down to around 20VDC? Not that I'm gonna try it since it's HV but I was wondering what kind of ICs and circuit would be needed
     
  2. #12

    Expert

    Nov 30, 2010
    16,257
    6,762
    Try starting with a current goal.

    I can reduce 300 volts to 20 volts with 2 resistors, no computer chips needed, but what current do you need?
     
  3. electronewb

    Thread Starter Member

    Apr 24, 2012
    260
    3
    Voltage divider? For current around .5A
     
  4. #12

    Expert

    Nov 30, 2010
    16,257
    6,762
  5. electronewb

    Thread Starter Member

    Apr 24, 2012
    260
    3
    Cool little software I get this error "Your solution is not yet WEBENCH enabled" Then I get a list but all the specs on the chips are Voltage too high or current exceeds limit
     
  6. gootee

    Senior Member

    Apr 24, 2007
    447
    50
    At that point, you'd want to start looking for relevant Application Notes (and published articles) at the linear.com and ti.com websites.
     
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