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How does this cable connect exactly?

Discussion in 'General Electronics Discussion' started by tobindax, Nov 19, 2016.

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  1. tobindax


    Nov 19, 2016
    I opened an earphone case to fix a cable that was losing connection, and I noticed one of the two cables is a blue that doesn't seem to have any visible copper in it, it does not short-circuit if the two wires touch each other, but after I cut the colored opened it does not appear to have any copper in it, so I wonder how does it connect to the end?

    [​IMG] [​IMG] [​IMG]
  2. tobindax


    Nov 19, 2016
    That wasn't easy to solder at all. It's as if the copper-colored one can easily conduct but the blue one conducts only with the solder.
    Last edited by a moderator: Nov 19, 2016
  3. 73's de Edd

    73's de Edd

    Aug 21, 2015
    Looks like all is well with the COPPER colored stranded wire, but the BLUE stranded wire looks to have broken and pulled up within its secondary, clear colored insulative shell.
    That leaves a pulled up BLUE stranded wire set within the clear insulative shell.
    I would say that if you might go up from the blue end about an 1/8---1/4 of an inch and cut away the clear coating, so that you would then be able to see the blue wires end.
    You then heat up a solder blob and place the blue wire end in that blob while continuing heating the blob,then add some fresh solder, I then certainly think that BLUE wire is having Soldereze insulation, so that it both pulls back up the wire and melts and you should soon see a tinned wire end.
    Then, solder the BLUE wire back to its break away point.

    73s de Edd
  4. tobindax


    Nov 19, 2016
    That's not the issue. Those cables have a particular technology that does not contact at all, or almost at all, unless it's soldered. It's as if they are designed to be both (not just the gold-looking one) in contact with each other and then directly soldered.

    I wonder what that tech is.
  5. tobindax


    Nov 19, 2016

    Here is a googled picture of how those weird things look in general, especially the right ones, but maybe also the ones on the left.
  6. tobindax


    Nov 19, 2016
    I heard they might be called magnet wires? Line thin strains with insulation weaved together. Sounds expensive to make, a pain to deal without solder but probably convenient to avoid shorts in those small scales.
  7. KMoffett


    Jan 21, 2009
    "Magnet wire" is solid wire with an enamel coating for insulation.

  8. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    Jan 21, 2010
    I find your ideas intriguing and would like to subscribe to your newsletter.
  9. davenn

    davenn Moderator

    Sep 5, 2009
    any enamelled wire if commonly referred to as magnet wire ... it's nothing special and isn't magnetic

    thin wires and thin strands of nylon intertwined make very flexible cables, purpose made for headphones, microphone headsets etc
    the enamel coating on the wire is the insulation

    naaaa easy

    you have no idea how wrong that sounds -- really doesn't make sense ... hence steve's mild sarcasm response ;)

  10. 12vdc


    Apr 13, 2011
    2 cents, the Chinese masters of cheap have decided that most cheap ear buds headset have 2 strands of wire in a sheath both coated with some insulating film, colour denoting polarity. I just take a knife and scrape the coating then solder, but use real solder, (not the new environmentally friendly stuff)
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