RE: Slightly off topic- Van DeGraff Generator / other E&Mexperiments

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Nick Andrews by way of Terry Fritz <twftesla-at-qwest-dot-net>" <nicothefabulous-at-hotmail-dot-com>

You can use an air switch and pushbutton, as used in hot tubs and jetted 
bathtubs for the pump switching.  You can buy one from a spa store or a 
place selling jetted tubs for less than 20 bucks for both.  I worked at a 
place that turned tubs into jetted units, and we bought them very cheaply.  
Just ask for an air switch, a pushbtton and some air line.  The switches 
will handle 120V load to control the SCR easily, or you can build a relay 
circuit.  I may still have a wholesale source, if several people want some, 
and may be able to get them very cheaply, a couple of bucks each for the 
switches and the pushbuttons if we order a dozen at a time.

Nick Andrews
Littleton, CO


>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: RE: Slightly off topic- Van DeGraff Generator / other  
>E&Mexperiments
>Date: Tue, 25 Jun 2002 08:11:03 -0600
>
>Original poster: "brianb by way of Terry Fritz <twftesla-at-qwest-dot-net>" 
><brianb-at-antelecom-dot-net>
>
>Guys,
>
>Now I'm scared!!!
>
>You don't want to be connected via wire to ANY multi kJ pulse discharge
>capacitor. If that SCR fails (or flashes over) the exploding wire might be
>the cable to your switch, your hand, arm, and any other body parts along 
>the
>way. Complete electrical isolation from the operator is a must (My 
>2-cents).
>
>Regards,
>Brian B.
>
>-----Original Message-----
>From: Tesla list [mailto:tesla-at-pupman-dot-com]
>Sent: Monday, June 24, 2002 8:59 PM
>To: tesla-at-pupman-dot-com
>Subject: Re: Slightly off topic- Van DeGraff Generator / other
>E&Mexperiments
>
>
>Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
><Fucian-at-aol-dot-com>
>
>In a message dated 6/24/02 11:04:52 PM Eastern Daylight Time,
>tesla-at-pupman-dot-com writes:
>
><< f you discharge high voltage from a large cap through an SCR into a
>  piece of solder it will explode with more violence than anything else I
>  have seen.  You could probably use it as a blasting cap :)   I believe
>  its the vaporized flux that really causes the bang.  And with the SCR,
>  you just connect your pushbutton switch to the gate far away from the
>  experiment.
>
>  Wasn't exploding wire detonators part of the first nuke?
>
>  Rob. >>
>
>Better make SURE your SCR can handle the pulse current!I just blew a 
>4500amp
>stud mount with a disk launcher!It now fires automatically at 130volts! 
>That
>was a NICE 3/4in diam stud SCR too!!!!
>Now only if I can get a clamp for my Hocky Puck SCRs....
>
>Matt G
>
>
>
>
>
>




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