Re: red 304TL

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

Original poster: "Steven Ward by way of Terry Fritz <twftesla-at-qwest-dot-net>" <srward16-at-hotmail-dot-com>

Hello Claude,

Actully i looked at your project extensively (on Trimmels page).  Im using 
about 2uf of doubler capacitance.  My tank cap is only 1000pf.  I try to 
keep the plate as cool as i can.  And yes, the 18" is with quick bursts of 
power.  I think at most i hit up to 100v maybe(input that is).  Im still 
waiting for the doubler MO caps in the mail.  Im using one MO cap with a 
series of motor run caps.  Im currently exploring the staccato circuit as 
im building it now.  I will have to say that your coil inspired me!  Your 
sparks look amazing in my opinion!  As for transformer, its a 2100v MOT.
Unknown current.  I dont know the grid current either as i dont have the 
metering to do so.  What is needed to measure grid current?  A DC MA meter?
I have some cheap DMMs that have dc ma selections  Will this work?  Im 
guessing the potential on the ground side of the grid leak network is low?
And that is in fact where the measurement is taken correct?  Oh, and 
Claude, one more question, do you happen to have or know of a source for 
heatsinked plate connectors?  Im using a ceramic plate cap right now with a 
small fan on it when i do crank it up.  Im sure the heatsink would 
help...  Thanks,

Steve Ward.






>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Re: red 304TL
>Date: Thu, 14 Nov 2002 08:01:13 -0700
>
>Original poster: "claude masetto by way of Terry Fritz 
><twftesla-at-qwest-dot-net>" <claudmas-at-optusnet-dot-com.au>
>
>Hello Steve,
>I've built a dual 304tl VTTC and run the tubes in short bursts for a few
>seconds when the plates glow a real bright orange as I was lucky to get
>these tubes real cheap and I don't want to melt a hole in the plate. The
>insides of the four plates are a lot brighter because of the concentrated
>heat.
>I can get 28" out of this system and when I was running with one tube I also
>obtained 18" with a bright glowing plate.What size transformer and what size
>doubler cap are you using?
>I would'nt push these tubes any more when they glow like this. What is your
>plate current and grid current.
>Regards
>Claude.
>
>
>----- Original Message -----
>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: <tesla-at-pupman-dot-com>
>Sent: Thursday, November 14, 2002 10:56 AM
>Subject: red 304TL
>
>
> > Original poster: "Steven Ward by way of Terry Fritz <twftesla-at-qwest-dot-net>"
><srward16-at-hotmail-dot-com>
> >
> >
> > Hello,
> >
> > Im working on my 304TL VTTC, and with a doubler im up to about 18" with
> > only one tube.  Problem is, the tubes getting red to say the least!  I
> > would actually have to say almost an orange!  I know this is probably
> > bad.  But, does anyone know how red these tubes are spec'd to run?  I
>think
> > im up to 90v on the variac, so thats about 3000v or so on the plate.  Im
> > going to look into staccato circuits, but for now i would like to know how
> > red/orange can this tube run.  If anyone has this type of experience or
> > info on this tube, let me know.  Thanks,
> >
> > Steve Ward.
> >
> >