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Failed Electro

Discussion in 'Hobby Electronics' started by Phil Allison, Aug 10, 2008.

  1. Phil Allison

    Phil Allison Guest

    ** See ABSE for graphic image of faulty 6800uF electro cap.

    Not one for the squeamish....





    ...... Phil
     
  2. Phil Allison

    Phil Allison Guest

    "Colin Horsley"


    ** ABSE = " alt.binaries.schematics.electronic "

    Not available with Google Groups or a few yank ISPs that have banned all "
    alt " NGs.




    ...... Phil
     
  3. Den

    Den Guest

    & iinet who stopped carrying binary ng's some time ago...... :(
     
  4. Phil Allison

    Phil Allison Guest

    "Den"
    ** The ABSE pic is here:

    http://www.usenet-replayer.com/cgi/...usenet-replayer.com/5/0/8/1/1218321805.80.jpg

    " ** The attached pic is of a 6800uF, 80 volt, 85C electro of recent
    Taiwanese
    manufacture, which has not been subjected to abuse in any way. When removed
    from the equipment last Friday, it was completely open circuit and with the
    top slightly bulged.

    When the seal was broken, it hissed like a can of beer does when you pull
    the ring and brown liquid bubbled out the opening.

    The brand is " Su'scon " - no kidding.

    http://www.su-scon.com.tw/

    So the "Capacitor plague " is still with us.

    http://en.wikipedia.org/wiki/Capacitor_plague "




    ..... Phil






    .......
     
  5. Den

    Den Guest


    a bit like "Mean-Well" SMPS's
     
  6. Bob Parker

    Bob Parker Guest

    Yep, that's why I can't look there.

    Bob
     
  7. Den

    Den Guest

  8. kreed

    kreed Guest

    yuck.

    lucky it didnt explode. That would have made a mess.
     
  9. Many people can't easily access ABSE, that's why it's a bit silly to
    post there these days. Would be much better if everyone simply posted
    images to a web based photo host or other such site, then *everyone*
    can see them.
    Most ISP's include your own web space for free.

    BTW, limited access to ABSE is available on the web here:
    http://www.usenet-replayer.com/groups/alt.binaries.schematics.electronic.html
    Takes a while for images to get cached though, and often not
    everything shows up.
    The cap photo in question is there.

    Dave.
     
  10. Phil Allison

    Phil Allison Guest

  11. keithr

    keithr Guest

    I once had a 100uf tantalum explode in my face. One of the really old ones,
    a metal tube with the ends epoxied in. Everything went white until the
    paperdust cleared to the sight of the rest of the lab pissing their boots at
    me disappearing into a miniature snow storm.
     
  12. Eeyore

    Eeyore Guest

    Very likely I'd imagine. Is this a 100/120Hz filter cap presumably ?

    Graham
     
  13. Eeyore

    Eeyore Guest

    You didn't have Bill Sloman in mind did you ?

    Graham
     
  14. Eeyore

    Eeyore Guest

    Sometimes I wonder with the frequency that 'Exxon-Mobil' appears in his
    posts, along with other keywords.

    Mind you I was just having a leg-pull really. ;~)

    Graham
     
  15. **One like this?

    http://www.bikudo.com/product_search/details/65538/axial_solid_tantalum_capacitor.html

    They still make 'em. They're still a very good cap. Very long life and
    excellent characteristics. Often used in military applications. They tend to
    be expensive.
     
  16. Tim Williams

    Tim Williams Guest

    Marginally half sane people like us are far more fun. ;-)

    Tim
     
  17. Ross Herbert

    Ross Herbert Guest

    On Tue, 12 Aug 2008 08:12:05 +1000, "Trevor Wilson"

    :
    :
    :
    ::>
    :> :>>> "Den"
    :>>>
    :>>>
    :>>>
    :>>> > & iinet who stopped carrying binary ng's some time ago...... :(
    :>>>
    :>>> ** The ABSE pic is here:
    :>>>
    :>>> http://www.usenet-replayer.com/cgi/content/framebanner_3?http://www.u...
    :>>>
    :>>> " ** The attached pic is of a 6800uF, 80 volt, 85C electro of recent
    :>>> Taiwanese
    :>>> manufacture, which has not been subjected to abuse in any way. When
    :>>> removed
    :>>> from the equipment last Friday, it was completely open circuit and with
    :>>> the
    :>>> top slightly bulged.
    :>>>
    :>>> When the seal was broken, it hissed like a can of beer does when you
    :>>> pull
    :>>> the ring and brown liquid bubbled out the opening.
    :>>>
    :>>> The brand is " Su'scon " - no kidding.
    :>>>
    :>>> http://www.su-scon.com.tw/
    :>>>
    :>>> So the "Capacitor plague " is still with us.
    :>>>
    :>>> http://en.wikipedia.org/wiki/Capacitor_plague "
    :>>>
    :>>> .... Phil
    :>>>
    :>>> ......
    :>>
    :>> yuck.
    :>>
    :>> lucky it didnt explode. That would have made a mess.
    :>
    :> I once had a 100uf tantalum explode in my face. One of the really old
    :> ones, a metal tube with the ends epoxied in. Everything went white until
    :> the paperdust cleared to the sight of the rest of the lab pissing their
    :> boots at me disappearing into a miniature snow storm.
    :
    :**One like this?
    :
    :http://www.bikudo.com/product_search/details/65538/axial_solid_tantalum_capacitor.html
    :
    :They still make 'em. They're still a very good cap. Very long life and
    :excellent characteristics. Often used in military applications. They tend to
    :be expensive.


    That is a solid hermetic sealed tantalum which is relatively modern. But the
    one's I think you mean are "wet" tantalums which do look similar. The first
    hermetic sealed tantalums such as the KEMET T110 series date back around 40
    years
    http://www.kemet.com/kemet/web/home...aled-Axial Catalog/$file/F3100_TaHermSeal.pdf
     
  18. Guest

    That's John's reasoning for you. He certainly designs more saleable
    stuff than I do, but if I was as blindly optimistic about the quality
    of the stuff I designed I might have been able to sell more of it.
     
  19. keithr

    keithr Guest

    Something like that, I think that the brand was Stantalum or something like
    that. Its a long time ago, we were developing an automatic landing system
    for military aircraft.

    K
     
  20. keithr

    keithr Guest

    This was in the 1960s. The first tantalums that I saw were in about 1961, I
    may still have a couple of them around somewhere.
     
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