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Would resistors short itself?

Discussion in 'Electronic Basics' started by Mr. Man-wai Chang, Aug 2, 2013.

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  1. Let the hate claim down!

    I have long forgotten my hate and my arrogant ... :)

    --
    @[email protected] Remain silent. Nothing from soldiers and magicians is real!
    / v \ Simplicity is Beauty! May the Force and farces be with you!
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  2. P E Schoen

    P E Schoen Guest

    "Mr. Man-wai Chang" wrote in message
    I don't hate you any more than I might hate a gnat. You are merely annoying,
    and apparently do not have anything useful to add to the discussion,
    especially when you have a childish "tantrum" and type gibberish when anyone
    tries to determine what you are really seeking. Your behavior exactly
    emulates that of a classic troll, apparently in an attempt to solicit
    attention rather than engage in rational discussion.

    If you have a legitimate need for information about a specific application
    or concept, people will be glad to help. But so far you have only spouted
    silly objections to sound advice, and appear to lack even basic technical
    expertise in concepts such as ohm's law and fundamental characteristics of
    LEDs. Your argument about saving money by eliminating a $0.001 resistor is
    ridiculous to the extreme.

    So, if you persist in your immature behavior, I will certainly not feed your
    trolling, and you will need to satisfy your craving for attention elsewhere.

    Paul
     
  3. My needs are simple. If that humiliated the pride of electronic
    engineering here, I was surprised!

    In fact, they were more like defending the "holy land" here, which was
    not my interest.

    I am going back to resistors and LEDs for my toys....

    BTW, words like "mature" are commonly used in bullying and trolling.

    --
    @[email protected] Remain silent. Nothing from soldiers and magicians is real!
    / v \ Simplicity is Beauty! May the Force and farces be with you!
    /( _ )\ (Fedora 19 i686) Linux 3.10.4-300.fc19.i686
    ^ ^ 16:21:02 up 1 day 19:29 0 users load average: 0.00 0.01 0.05
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  4. Anyway many parents and managers use those words to scare kids. :)

    --
    @[email protected] Remain silent. Nothing from soldiers and magicians is real!
    / v \ Simplicity is Beauty! May the Force and farces be with you!
    /( _ )\ (Fedora 19 i686) Linux 3.10.4-300.fc19.i686
    ^ ^ 18:36:02 up 1 day 20:14 0 users load average: 0.00 0.01 0.05
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  5. Shaun

    Shaun Guest

    In my four Years working at repairing industrial electronics and instrument
    calibration; I did have a case where I found a shorted resistor. I
    unsoldered it after measuring it a short and after removing it from the
    circuit board it still measured a short. Very weird!

    Shaun



    "Tim Wescott" wrote in message

    In my experience resistors fail open, not short. Usually what happens is
    that some resistive material burns away, that forces the surrounding
    material to carry more load which makes it hotter, and then the rest
    burns away.

    There may be some resistive material out there that leads to the resistor
    failing short -- but it'd have to be a weird construction out of a weird
    material.
     
  6. Shaun

    Shaun Guest

    "Phil Allison" wrote in message

    "Michael Black"

    ** Not likely at all.

    Nearly all resistors are spirals of material (metal, carbon or composites)
    around a ceramic rod - so any breakover will be between adjacent turns in
    the spriral. This will probably ruin the part but it will not short end to
    end.

    A series string of resistors breaks the voltage applied to EACH resistor
    down by the number of resistors, making much higher voltages tolerable.


    .... Phil


    Phil,

    I have seen high voltage, high resistance resistors flash over end to end in
    the lab, I even cleaned them with pure alcohol and a cotton cloth, then let
    them dry for a few hours. The reason I cleaned them was that that finger
    prints - which are slightly conductive could cause a change in resistance on
    some of the resistors. I have seen this in the old Beckman DMM meters, they
    have a 22 Mohm resistor in them to give them the high input impeadance and
    if it gets soiled or touched, it could change the readings, so I cleaned
    them with a cotton swap and alcohol.

    Shaun
     
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