Floating Ground to dc ground help

Discussion in 'General Electronics Chat' started by ontheair, Jan 7, 2008.

  1. ontheair

    Thread Starter New Member

    Jan 7, 2008
    1
    0
    Hello all. I was wondering how to connect unit that is floating ground to dc ground with out damaging unit. can any one give me suggestions please. Thank You Kindly. Happy New Year

    onair
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    With no information about the circuits involved, it is impossible to say if this would be a safe thing to do.
     
  3. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Sometimes items use a "floating" ground due to how they're connected to the power supply.

    For example, a typical PC ATX-form factor power supply has no designated +7V output, although by connecting a component between the +5V and +12V outputs one can realize a 7V difference in potential. In this case, the +5V is now a "floating virtual ground" to the component. If you attempted to connect this "floating virtual ground" to chassis ground, you would place a direct short across the +5V supply.
     
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