Priority Power circuit

Discussion in 'The Projects Forum' started by bmsgaffer86, Mar 4, 2010.

  1. bmsgaffer86

    Thread Starter New Member

    Jul 14, 2009
    2
    0
    Hi! I had a question for the experts here. I have thought over it for hours and have not come up with a simple solution yet. I have attached a block diagram for this project I am working on.

    I am working on an encoder splitter box. There are three devices attached that can provide 24v to the encoder, but it is necessary to completely isolate the three devices from each other. So i am trying to build a circuit that will take power from JUST one of these devices, and then switch off (electrically isolate) the power and ground lines from the other two devices. Then, if power is interrupted, it will switch to taking power from a working device and completely isolate the other two...

    For example, if i have three devices plugged in and then the one that happens to be providing the encoder power shuts off, the circuit will then just automatically take power from another device.

    Its a hard thing to explain, I hope I have done a halfway decent job... If not, let me know. Anyone have any ideas? I am looking for some other engineering minds to bounce this off of. Thanks!

    Brandon
     
  2. mkbutan

    Senior Member

    Sep 30, 2008
    270
    16
    are you trying to say you want to have parallel isolated connection
    pl clear your idea
    and i cant see any attachment
    "(I have attached a block diagram for this project I am working on.)"

     
  3. bmsgaffer86

    Thread Starter New Member

    Jul 14, 2009
    2
    0
    DOH! I didnt attach my diagram.

    I'm not sure if that's what I need or not :)

    Check out my diagram and see if that clears it up...
     
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