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A thought about high voltage

Discussion in 'Electronic Basics' started by [email protected], Sep 8, 2005.

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  1. Guest

    I was just thinking of that trick Nikola Tesla invented where he would
    strap himself to one of his coils and stand on an insulated surface and
    shoot lightning off his fingertips and as long as he didn't touch any
    grounded objects, he would be unharmed. I was also thinking about Dr.
    Megavolt at the same time (yes, my brain does that) the man who perorms
    with his one million volt Tesla coil while wearing a metal suit so the
    electricity just skips his body. I was wondering if the whole suit is
    nesacery or if i tried the lightning from fingertips, could I wear a
    tight metal vest against my skin, under my clothes. Would the
    electricity skip past my heart and major organs as long as the vest had
    less resistance than I do? would I be able to do the lightning from the
    finger tips, but be able to shoot sparks from my finger to grounded
    objects safley? What if instead of a vest I wore metal metal anklets
    and braclets, once again tightly wrapped, and connected them all with
    insulated wire under my clothes?
     
  2. I think this falls under the heading of "Don't try this at home." As
    you said, the trick only works if you remain isolated from ground. This
    also brings to mind the guys who work on the very high voltage
    transmission lines from helicopters. The helo (which is not grounded
    while flying, and probably generates some static electricity from the
    spinning rotor above) sidles up next to the aerial work site while the
    technician extends a wand toward the power line to match the potential,
    producing a pretty eerie looking arc. Once the probe touches the wire,
    the tech places a clamp on the wire and assumes his place on the work
    platform. All very safe if done in the proper order, but not for the
    faint of heart. Those chopper pilots are a special breed too.

    Nels
     
  3. John  Larkin

    John Larkin Guest


    The high frequency stuff from a Tesla coil won't shock you. It might
    cause a contact burn where it hits the skin, if it's a chunky enough
    coil. If you firmly hold a small metal object, a key maybe, in your
    hand, you can pull impressive arcs off the tip of that.

    Doesn't matter if you're grounded or not.

    You *could* google this, you know. You'd find stuff like...

    http://members.misty.com/don/skin.html


    John
     
  4. As
    you said, the trick only works if you remain isolated from ground.
    This
    also brings to mind the guys who work on the very high voltage
    transmission lines from helicopters. The helo (which is not grounded
    while flying, and probably generates some static electricity from the
    spinning rotor above) sidles up next to the aerial work site while the

    technician extends a wand toward the power line to match the
    potential,
    producing a pretty eerie looking arc. Once the probe touches the
    wire,
    the tech places a clamp on the wire and assumes his place on the work
    platform. All very safe if done in the proper order, but not for the
    faint of heart. Those chopper pilots are a special breed too.

    Nels
     
  5. Jasen Betts

    Jasen Betts Guest

    blood conducts electricity better than flesh, (and major blood vesesl come together near
    the heart) nerves also conduct to a lesser extent (which is part of why electric shock
    is unpleasent)

    go with the full body suit.
     
  6. Joanne Hales

    Joanne Hales Guest

    blood conducts electricity better than flesh, (and major blood vesesl come
    And remember, Henry Transtrom was killed doing just this trick.
    Cheers.
    Mark.
     
  7. Kitchen Man

    Kitchen Man Guest

    And the parameters of what constitutes isolation from ground change as
    voltage changes. As the voltage rises, the isolation should increase
    along with it.
    http://www.abb.com/global/abbzh/abb...=61DE&e=us&c=5975E947217CDC92C1256EFA0048910E
    (http://tinyurl.com/cfrsk)

    http://www.findarticles.com/p/articles/mi_m0CXO/is_8_55/ai_107141280
     
  8. Yup, that's the stuff. While in Houston a few years ago, I spent a day
    at the space center. One of the Imax movies playing there contained
    footage of one of these helicopter-borne line techs going about his
    daily routine. The thought process is pretty interesting. "Let's see
    now -- I am about to get into this helicopter and fly up next to that
    250Kv power line 500 feet in the air, then reach out and touch that line
    with this big stick, clamp this here work harness to that wire, and get
    out of the helicopter in mid air, leaving the chopper to fly away, and
    me strapped to a 250Kv power line." All in a day's work. The Imax film
    gave a very neat perspective from the bird's eye view.

    Nels
     
  9. Nanu5871

    Nanu5871 Guest

    The biggest difference between Hi-Tension Power lines and Tesla coils is
    that the Tesla is frequency modulated. Keep in mind the 'skin effect'
    when you work with higher frequencies, it tends to travel along the
    surface of your skin (provided you dont loose ground isolation).

    As mentioned before, this is not a 'safe' trick and you will want to
    test it on NON-LIVING things first to determine the safety level.
    Also keep in mind that if you are unfortunate enough to provide a
    current path for the 'ionizing electronic radiation', at best you will
    receive an very nasty burn that can take up to 1/2 year or longer to
    heal. At worst, you will not have a 2nd chance to make another mistake
    and will fittingly be put on the Darwin Award website for removing
    another unwise person from the world.
    Nanu5871
     
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