Coil form/bobbin

Discussion in 'The Projects Forum' started by capnray, Sep 19, 2011.

  1. capnray

    Thread Starter Member

    Jul 3, 2010
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    Today I reverse engineered a RC transmitter. To duplicate the RF unit I need a coil form with a ferrite/iron slug. wire for the coils is no worry, however the forms seem elusive, any help is appreciated.
     
  2. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    There are a lot of coil forms.
    A picture would help.

    Bertus
     
  3. capnray

    Thread Starter Member

    Jul 3, 2010
    59
    2
    Profile has been modified, picture attached. It is just one of those slug tuned, square base plastic coil forms we find in battery operated toys and RF links.
     
  4. Wendy

    Moderator

    Mar 24, 2008
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    You would have better luck with a schematic, it would tell you the inductance.
     
  5. capnray

    Thread Starter Member

    Jul 3, 2010
    59
    2
    I have the schematic. I know the number of turns, the spool diameter, the wire size. I need blank spools to duplicate the sucker.
     
  6. SgtWookie

    Expert

    Jul 17, 2007
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  7. capnray

    Thread Starter Member

    Jul 3, 2010
    59
    2
    Thanks Sarge, this may work. I'll need to find a distributor.
     
  8. THE_RB

    AAC Fanatic!

    Feb 11, 2008
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    You can probably buy that inductor ready wound off the shelf. I'll bet they did.
     
  9. capnray

    Thread Starter Member

    Jul 3, 2010
    59
    2
    They probably wound them at break time from fireworks assembly, LOL.
     
  10. capnray

    Thread Starter Member

    Jul 3, 2010
    59
    2
    Sarge,

    Email with Cosmo/sample requests have me at a dead end. The respondent stated that there was no stock available, then later told me that she had no record of my sample request. I believe she is a bit daft...perhaps blond.
     
  11. SgtWookie

    Expert

    Jul 17, 2007
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    Well, I haven't used them in awhile - maybe they have new personnel. They used to be very quick and professional.
     
  12. capnray

    Thread Starter Member

    Jul 3, 2010
    59
    2
    Amazing, Cosmo has no distributors, sounds like my last place, Richardson Electronics, "Engineered Solutions"...
     
  13. bertus

    Administrator

    Apr 5, 2008
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