Is This an Isolation Transformer ?

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  • mmartell
    Badcaps Legend
    • Oct 2013
    • 3189
    • Canada

    #1

    Is This an Isolation Transformer ?

    Patronics CA1000JH. Two outlets, a switch, a fuse and a large transformer. That's it. Bought it for $8 at a resale shop.
    Attached Files
  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA

    #2
    Re: Is This an Isolation Transformer ?

    No, the bad part is that, they put the AC power input fuse on the Neutral (White wire) instead of the Hot wire. You should verify that Hot and Neutral wires are properly wired up.
    Never stop learning
    Basic LCD TV and Monitor troubleshooting guides.
    http://www.badcaps.net/forum/showthr...956#post305956

    Voltage Regulator (LDO) testing:
    http://www.badcaps.net/forum/showthr...999#post300999

    Inverter testing using old CFL:
    http://www.badcaps.net/forum/showthr...er+testing+cfl

    Tear down pictures : Hit the ">" Show Albums and stories" on the left side
    http://s807.photobucket.com/user/budm/library/

    TV Factory reset codes listing:
    http://www.badcaps.net/forum/showthread.php?t=24809

    Comment

    • mmartell
      Badcaps Legend
      • Oct 2013
      • 3189
      • Canada

      #3
      Re: Is This an Isolation Transformer ?

      How do I verify that ? I plugged a lamp into it at the store and the lamp came on.

      If it's not an Isolation Transformer then what is it ?

      Comment

      • goontron
        5000!
        • Dec 2011
        • 4108
        • US

        #4
        Re: Is This an Isolation Transformer ?

        its a buck/boost transformer. 220v for australian junk and 100v for old radios.
        (thats what i use mine for at least)
        Things I've fixed: anything from semis to crappy Chinese $2 radios, and now an IoT Dildo....

        "Dude, this is Wyoming, i hopped on and sent 'er. No fucking around." -- Me

        Excuse me while i do something dangerous


        You must have a sad, sad boring life if you hate on people harmlessly enjoying life with an animal costume.

        Sometimes you need to break shit to fix it.... Thats why my lawnmower doesn't have a deadman switch or engine brake anymore

        Follow the white rabbit.

        Comment

        • budm
          Badcaps Legend
          • Feb 2010
          • 40746
          • USA

          #5
          Re: Is This an Isolation Transformer ?

          It is an multi-tap autotransformer. You can use you AC voltmeter and the measure the AC voltage between the Neutral and Ground, Hot and Ground to see what you get. In US, the Neutral is tied to ground at the circuit breaker panel, so Neutral to Ground should show 0V (it may show perfect 0V if there is load in the same circuit using that same Neutral wire.
          Last edited by budm; 02-07-2014, 09:44 PM.
          Never stop learning
          Basic LCD TV and Monitor troubleshooting guides.
          http://www.badcaps.net/forum/showthr...956#post305956

          Voltage Regulator (LDO) testing:
          http://www.badcaps.net/forum/showthr...999#post300999

          Inverter testing using old CFL:
          http://www.badcaps.net/forum/showthr...er+testing+cfl

          Tear down pictures : Hit the ">" Show Albums and stories" on the left side
          http://s807.photobucket.com/user/budm/library/

          TV Factory reset codes listing:
          http://www.badcaps.net/forum/showthread.php?t=24809

          Comment

          • mmartell
            Badcaps Legend
            • Oct 2013
            • 3189
            • Canada

            #6
            Re: Is This an Isolation Transformer ?

            Hmmm... so "junk" is what you're telling me...

            Comment

            • goontron
              5000!
              • Dec 2011
              • 4108
              • US

              #7
              Re: Is This an Isolation Transformer ?

              Originally posted by mmartell
              Hmmm... so "junk" is what you're telling me...
              if you dont want it i will take it! my fried years ago.
              Things I've fixed: anything from semis to crappy Chinese $2 radios, and now an IoT Dildo....

              "Dude, this is Wyoming, i hopped on and sent 'er. No fucking around." -- Me

              Excuse me while i do something dangerous


              You must have a sad, sad boring life if you hate on people harmlessly enjoying life with an animal costume.

              Sometimes you need to break shit to fix it.... Thats why my lawnmower doesn't have a deadman switch or engine brake anymore

              Follow the white rabbit.

              Comment

              • eccerr0r
                Solder Sloth
                • Nov 2012
                • 8679
                • USA

                #8
                Re: Is This an Isolation Transformer ?

                Yep autotransformer. There is no isolation - you can see that one wire of the input (120V) is connected to both outputs - that's not isolation.

                It's how to get 220V for European devices in the USA. I was wondering about Patronics, is that a Canadian company? They don't seem to be well listed on Google.

                I have only a Sabir 250VA autotransformer to get 220V from 120V or 120V from 220V. This one is also an autotransformer (no isolation) and was made in France as far as I can tell... Unfortunately it definitely was made in the EU as the input plug is a dual pin and thus can't really use it without an adaptor or modification...

                Comment

                • domas
                  News Hater
                  • May 2013
                  • 323
                  • Denmark

                  #9
                  Re: Is This an Isolation Transformer ?

                  Originally posted by goontron
                  its a buck/boost transformer. 220v for australian junk and 100v for old radios.
                  (thats what i use mine for at least)
                  not only australian there is another moderately large continent across the pond that is using 220v

                  Comment

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