Transformer question

Discussion in 'The Projects Forum' started by sportsfan27, Feb 11, 2009.

  1. sportsfan27

    Thread Starter Active Member

    Jan 29, 2009
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    Hi,
    I've got a schematic with a transformer in it, and there are a some numbers next to the wires leading into and out of the transformer. What do these numbers mean?
     
  2. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
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    Can you give us another clue?

    John
     
  3. kubeek

    AAC Fanatic!

    Sep 20, 2005
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    Probably numbering of wires on the physical transformer, or winding ratios.
     
  4. beenthere

    Retired Moderator

    Apr 20, 2004
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    Be a bit easier to tell with the numbers to see.
     
  5. sportsfan27

    Thread Starter Active Member

    Jan 29, 2009
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    This is what it looks like
     
  6. beenthere

    Retired Moderator

    Apr 20, 2004
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    Those are terminal numbers.
     
  7. sportsfan27

    Thread Starter Active Member

    Jan 29, 2009
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    What does that mean?
     
  8. thingmaker3

    Retired Moderator

    May 16, 2005
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    Terminal numbers are the numbers assigned to the wires coming out of the transformer, and the terminals they are soldered to.
     
  9. sportsfan27

    Thread Starter Active Member

    Jan 29, 2009
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    So it doesn't say anything about the winding ratios?
     
  10. kubeek

    AAC Fanatic!

    Sep 20, 2005
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    No it doesn´t. Maybe the rest of the circuit can help with that.
     
  11. sportsfan27

    Thread Starter Active Member

    Jan 29, 2009
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    Something else that came to mind: what does it mean if a transformer says 30-0-30V on it?
     
  12. beenthere

    Retired Moderator

    Apr 20, 2004
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    It means that the secondary is center tapped, with an output of 60 VAC. That doesn't say anything about current, though.
     
  13. virtualeast

    New Member

    Jan 13, 2009
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    If you can find a Part Number or Model Number for the Transformer, you can look up the specs or technical data for it.
     
  14. ketanstar

    New Member

    Feb 17, 2009
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    i want to use step down transformer for 230 v ac supply.so what factors should i consider?
     
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