Re: Tube Coils (fwd)

• To: tesla-at-pupman-dot-com
• Subject: Re: Tube Coils (fwd)
• From: Tesla List <mod1-at-pupman-dot-com>
• Date: Sun, 23 Feb 1997 21:11:11 -0700 (MST)
• Approved: mod1-at-poodle.pupman-dot-com

---------- Forwarded message ----------
Date: Mon, 24 Feb 1997 12:58:34 +1200
From: Malcolm Watts <MALCOLM-at-directorate.wnp.ac.nz>
To: tesla-at-pupman-dot-com
Subject: Re: Tube Coils (fwd)

Hi Brent,
            Thanks for this....

<snip>
>   My vacuum-tube driven coil uses a pair of 805's, and runs great with
> hot, flaming 6-8" discharges. Got some pic's of it on the funet server:
> 
> http://www.funet.fi/pub/sci/electrical/tesla/pictures/turner
> 
> - Brent

What plate supply voltage are you using? I see from data the tubes 
are not rated for much more than 1 kV or so, but that could change 
if plate current is kept down somewhat. In tube amps I have dealt 
with, I have noticed that the ones running the tubes like this tend 
to burn 'em out quicker (low emission - stripped cathodes perhaps).
 
Malcolm

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