Transformer Identification

Discussion in 'General Electronics Chat' started by Jerry Dziuba, Apr 20, 2016.

  1. Jerry Dziuba

    Thread Starter New Member

    Feb 18, 2016
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    Is this enough information to get me in the ballpark of what I need to look for to get a replacement for a transformer?

    Input winding approx 160 turns
    Output winding approx 1200 turns

    The wire is so fine there is no way for me to accurately measure the gauge. The wire for the 1200 turns is like fine hair, and the wire for the 160 turns is like coarse hair - if that helps at all :)

    Also not sure I can do much to measure the core as this entire transformer is fairly small. I am including a pic for reference:
    https://goo.gl/yG7GiQ

    Any guidance would be appreciated.
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
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    What was the application?
    Max.
     
  3. Nykolas

    Member

    Aug 27, 2013
    87
    31
    Looks like a Xicon audio xformer, available from Mouser (42TMxxx, 42TLxxx series).
    Without more info (schematic) it is impossible to tell. E
     
  4. Jerry Dziuba

    Thread Starter New Member

    Feb 18, 2016
    28
    3
    Here's the schematic, and thanks a lot for the help you gave already!
    https://goo.gl/JlvbXO
     
  5. Jerry Dziuba

    Thread Starter New Member

    Feb 18, 2016
    28
    3
    Also, just put an ohmmeter to it.
    160 turns = 3 ohms
    1200 turns = 190 ohms
     
  6. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Looks like it just injects the muli-vibrator circuit into the probes, any small 5:1 7:1 signal transformer should do it, if the ratio you give is correct.
    I wouldn't expect it to be super critical.
    Max.
     
  7. Jerry Dziuba

    Thread Starter New Member

    Feb 18, 2016
    28
    3
    Does the 42TL013-RC look like a decent candidate?
    http://www.mouser.com/ds/2/449/XC-600127-202003.pdf
     
  8. Jerry Dziuba

    Thread Starter New Member

    Feb 18, 2016
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  9. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Should get a close match from one of those, what is wrong with the original, BTW?
    Max.
     
  10. Jerry Dziuba

    Thread Starter New Member

    Feb 18, 2016
    28
    3
    The original was still working, it came off an existing PCB we are trying to replicate and modify.

    BTW - I ended up picking out 5 different transformers to test and all of them work with varying degrees of sensitivity which is actually a nice find. I just need to get them all on the test bench to see what one will work best under "real world" conditions. So thanks for your help!
     
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