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Re: If you had this supply and switch, what would you build?
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- Subject: Re: If you had this supply and switch, what would you build?
 
- From: "Tesla list" <tesla@xxxxxxxxxx>
 
- Date: Sun, 17 Apr 2005 20:11:15 -0600
 
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- Resent-date: Sun, 17 Apr 2005 20:11:27 -0600 (MDT)
 
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Original poster: David Speck <dave@xxxxxxxxxxxxxxxx>
Guys,
I've often wondered what would happen if you just connected an 
appropriately sized primary to the unmodified output of the induction 
heater, and then added a Tesla secondary.  Wouldn't you have pretty much a 
complete VTTC?  It seems like that's all you'd need, or am I missing 
something?  Big induction heaters come up frequently on eBay, and can be 
had for little more that shipping costs.  Would the typical output 
frequency of an induction heater be too low for decent TC performance?
Has anyone figured a maximum size limit to a VTTC?  I often wonder if you 
could get one of those 10 or 20 kW Eimac triodes off eBay and drive it with 
a farm of MOT's with a 12" x 60" secondary.  Has anyone tried making 
something like this?  Would there be personal risks due to a high CW EM field?
Dave
                 Oh yes, I would most certainly use water cooling. More, 
I would use a Corona ring around and tapered away from the water cooling 
hose say 10 inches; I would likely use 3/4 inch CU tubing for the primary 
for the hose non-conductive, wind the isolation hose rated at 1 kV /Ft 
into a 30 ft hose trap well spaced.
So there is the primary, cooled with distilled water and isolation hose.
So, that takes care of the special requirements, from there it's on to 
what would you want to configure the rest as using the latest computer 
modeling. Operating cost is not an issue, there is plenty of 480,  3 phase 
to run it. That service drop has 7 MCM 500 lines in parallel, per leg, 
running to it. Don't view it as an induction furnace, just it's 20 kV at 
30 amps CCS supply floating across 40 Mfd cap bank for high current pulse 
delivery. So this is to be a DC Switched coil. Just a chance to play "What 
if" on a supply one usually can't get onto but here it is, just a fun 
design exercise.
Mike