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PC PSU driving relay

Discussion in 'Electronic Design' started by Dirk Bruere at NeoPax, Jul 28, 2012.

  1. I am using the +12VDC from a PC PSU to switch mains using a relay ie
    when the PC turns on mains power gets supplied to some amplifiers.

    Do I need diode protection across the relay coil for when the PC PSU
    switches off, or do such PSUs have such protection built in?
     
  2. Phil Allison

    Phil Allison Guest

    "John Larkin"

    ** So this Dirk dude imagines he is an engineer ??

    ROTFL !!



    ..... Phil
     
  3. Jasen Betts

    Jasen Betts Guest

    The PC powersupply has a bridge rectifier and some large capacitors on
    the 12V output, if the capacitors don't suffice to provide a slow
    enough voltage drop the rectifier will clamp the flyback peak voltage
    to somthing smaller than -1V
     
  4. Strangely enough, this is the first time I have ever used a mechanical
    relay.
     
  5. Phil Allison

    Phil Allison Guest

    "Dirk Bruere at NeoPax"

    ** That supposed to be some kind of excuse ?

    It ain't.
     
  6. Based on your past record I assume your excuse is mental illness
     
  7. Phil Allison

    Phil Allison Guest

    Dirk Bruere at NeoPax = ****
    ** Scum like you need a bullet in the head.
     
  8. Jamie

    Jamie Guest

    Didn't they take the guns away from you guys? I can see
    why.

    I understand you people only want to be good samaritans
    and clean up society but come on now, it appears to me, it
    may create empty streets with attitudes like yours. I mean,
    the worthless politicians won't have any brain dead voters
    to keep them in office so they can live free off our backs.

    Jamie
     
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