From: Skenny@highstream.invalid   
      
   Greg wrote:   
   > John Fields  wrote in   
   > news:t5s6c3tkrlid9ph2h0b5quphmdgmlveki7@4ax.com:   
   >   
   >   
   >>On Wed, 15 Aug 2007 18:38:22 GMT, Greg  wrote:   
   >>   
   >>   
   >>>I would like to build a shocking device similar to the prank 'gum'   
   >>>shocker or the pens that shock you when clicked.  This is for my class   
   >>>room experiment so it should be low power like the gags one can buy   
   >>   
   >>>from gas stations.  I know how to build a shocker from a set of points   
   >>>from a car but this has too much power.   
   >>   
   >>>How do the trick gum gags work?   
   >>   
   >>   
   >>---   
   >>   
   >>          LdI   
   >>     E = -----   
   >>          dT   
   >>   
   >>   
   >   
   >   
   > On Wed, 15 Aug 2007, John wrote:   
   >   
   >            LdI   
   >       E = -----   
   >            dT   
   >   
   > --------   
   > Sorry, John, I should have mentioned that I'm a physicist, a radiation   
   > physicist to be exact. I have a head full of equations for energy,   
   > induction, current, time, etc.  but no practical knowledge of how to   
   > build something to deliver the results of the equation.   
   >   
   > Having taken the gum tricks apart, I have been unable to be able figure   
   > out how to build one in the small components used for the pranks.  Is   
   > there any place you can direct me on the steps and materials involved in   
   > making one from scratch?  Thanks for your input.   
   >   
   > Greg   
      
   How about a piezo ignitor such as the kind in bar-b-q grills?   
   (Press the button and get a spark).   
      
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