Capacitor identity

Discussion in 'General Electronics Chat' started by kevmozzer, Aug 12, 2011.

  1. kevmozzer

    Thread Starter New Member

    Aug 12, 2011
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    I have a Ferguson radiogram from the 1960s, which has a failed capacitor I need to identify, but the markings are incomplete due to some of the casing falling off. It is square and orange coloured.
    The bit I can read is,
    ERIE
    V
    02
    6(?) Z
    3E

    Could anyone help, so that I can replace it please?
     
  2. bertus

    Administrator

    Apr 5, 2008
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  3. kevmozzer

    Thread Starter New Member

    Aug 12, 2011
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    Thanks Bertus, I had looked at that site but as you suggest I will ask on there too.
    I have attached a photo.
     
  4. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    Where was the capacitor located in the radiogram?

    The part that has broken off carried the value.
    Are the fallen off pieces recoverable?

    The value can probably be between 10 nF and 82 nF, due to the visible 3 (the multiplier factor, 3 zeroes afther the base value).

    Bertus
     
  5. hgmjr

    Moderator

    Jan 28, 2005
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    Are there any markings on the other side of the device?

    If so, it would be helpful if you provided a picture of the other side also.

    hgmjr
     
  6. debe

    Well-Known Member

    Sep 21, 2010
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    It is a ceramic capacitor & it will be in the range of .01 to .082uf (10nf to 82nf). agreeing with Bertus.
     
  7. SgtWookie

    Expert

    Jul 17, 2007
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  8. THE_RB

    AAC Fanatic!

    Feb 11, 2008
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    It looks like the ceramic plate and the 2 metal electrodes that cover each side of the plate are reasonably intact.

    You can use a capacitance meter. :)

    I've ID'ed round ceramic caps with a cap meter that way when the top half of the cap was broken off and it looked like a moon haha. Ie measure its remaining capacitance and calc the surface area to get it's original capacitance.
     
  9. kevmozzer

    Thread Starter New Member

    Aug 12, 2011
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    The radiogram is a 624 rg, and the capacitor seems to be part of the speaker output.
    After delving into it and getting a noseful of dust I have found the missing bit.
     
  10. KJ6EAD

    Senior Member

    Apr 30, 2011
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    It looks like 0.02µF (20nF).
     
  11. kevmozzer

    Thread Starter New Member

    Aug 12, 2011
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    Thanks for that, I'll go get one now.
    Thanks again.
     
  12. KJ6EAD

    Senior Member

    Apr 30, 2011
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