Re: x-ray with small Tesla coil as driver

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

Original poster: "Jack Vandam" <snotoir7674g-at-mindspring-dot-com> 


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, October 02, 2004 2:42 PM
Subject: Re: x-ray with small Tesla coil as driver


 > Original poster: "Ed Phillips" <evp-at-pacbell-dot-net>
 >
 > The anode got so hot I was afraid it would melt (there was a bit of
 > exaggeration in what I wrote).  In this tube the anode is a 1/2" disk of
 > thin copper (no more than 0.032") and got red hot even when I was
 > running it from the spark coil.  Perhaps the focussing was better with
 > this tube so all the power was dissipated in the anode.

Ok, that explains it.  Plus, your input had a lot more voltage than mine
did.

Thanks for the explanation,
Jack

 > The coil I used worked fine with my big and now defunct tube.  3" x 14"
 > secondary close wound with #30 wire and about 500 watts input from a 12
 > kV, 60 ma NST.  With a decent toroidal top terminal it puts out around
 > 27" streamers, about the maximum I can have in the location I was
 > running it.
 >
 > Ed
 >
 >