Re: Pentode TC progress (fwd)

To: tesla-at-pupman-dot-com
Subject: Re: Pentode TC progress (fwd)
From: Tesla List <mod1-at-pupman-dot-com>
Date: Tue, 4 Aug 1998 21:30:23 -0600 (MDT)
Approved: mod1-at-pupman-dot-com

---------- Forwarded message ----------
Date: Tue, 04 Aug 1998 08:21:08 PDT
From: Bill the arcstarter <arcstarter-at-hotmail-dot-com>
To: craven-at-globalnet.co.uk, tesla-at-pupman-dot-com
Subject: Re: Pentode TC progress

Richard Craven wrote:

>I amused myself by holding various ferrous items in the centre of the 
>tank: a stainless steel goblet got hot enough in a bout 2 minutes to 
>cause the old paint congealed in it to start smoking. A large 
>screwdriver had its tip get pleasantly warm in about 20 seconds.

Welcome to the world of induction heating!

I once wound about 6 turns of 1/4 copper tubing around the base of a 
pyrex test-tube, and connected it in place of my tesla primary.  This 
device (off of a 15kv 60ma neon) would heat nails to red hot in about 30 
seconds.  Loads of fun!  A nichrome loop would turn bright orange in 
about 2 seconds!

 On my site is a schematic of an old spark-gap driven induction heater:
http://www.geocities-dot-com/CapeCanaveral/Hangar/6160/ind1.html

So far I haven't had time to construct the auxillary tank coils and caps 
for the whole effect.

Induction heating is low-profile but widely used industrial process for 
the case-hardening of various object such as camshaft surfaces, gear 
teeth, munitions, etc.  Some precision foundries 
(aircraft/firearms/jewelry)  use induction heating under vacuum to 
preserve the purity of the metallic castings.

-Bill the arcstarter
Starting arcs in Cinci, OH
http://www.geocities-dot-com/CapeCanaveral/Hangar/6160

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