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[DPRG] Shocking

Subject: [DPRG] Shocking
From: Pay_the_Piper pay_the_piper at shaw.ca
Date: Wed May 10 19:40:26 CDT 2006

How do tasers jump from 6 or 9 volts to 100,000+?

PtP
  ----- Original Message ----- 
  From: Dennis Draheim 
  To: kip at kdream.com 
  Cc: dprglist 
  Sent: Wednesday, May 10, 2006 5:26 PM
  Subject: Re: [DPRG] Shocking


  I would respectfully say that they don't know what they're talking about.  It's not the voltage, it's the amperage that must be limited to prevent injury.

  I have owned a shock collar for a dog.  When it activates, a spark will arc at least a quarter inch from its terminals.  There is no way that a 2-6v charge could ionize the air to create such a spark.  While I haven't measured it, I would guess that the voltage is at least 500-1000v.

  I also have played with fencing transformers (I grew up on a farm -- I used one as the primary stage of a Tesla coil once).  Their output voltage is in the 1000-4000v range.  I believe their frequency is the same as that of the power line, that is, 60Hz.

  Tesla coils avoid injury by having a very high frequency and very low current.  If you take the frequency up into the radio range (~50Khz or better), then the current travels over the surface of the skin instead of penetrating it.  I had a Tesla coil that generated 80000+ volts, and I could hold a wrench in my hand and let the Tesla coil hit it with an 8" spark without sustaining injury.  (Without the wrench, I would end up with a burn where the spark touched my skin, more from the heat of the ionized air than the current.)

  Dennis


  On 5/10/06, Kipton Moravec <kip at kdream.com> wrote:
    I have a project where I have to incorporate a shocking system into a
    dog collar for training. (Long story)

    I have been doing some reading and one person says that the voltage
    should be between 2V and 6V! And that 6V is too high for a horse! 

    I know I do not get a shock from a 9V battery (except when I put my
    tongue on it) or even a 12V car battery, and I have not gotten one
    working with 24V either.

    I have gotten one from the ringer of a telephone which I believe is 48V. 
    And of course good old 120VAC.

    I was looking at shocking system (like electric fence) and they say
    1000V or 2000V or even 20,000V All are pulsing at 3 to 30 times per
    second.

    Can someone explain why someone would say 2-6V is what is needed? 

    Kip
    --
    Kipton Moravec <kip at kdream.com>

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  -- 
  Dennis 


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