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Forums
4hv.org :: Forums :: Tesla Coils
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Is this tube sutable?

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Proud Mary
Thu Jul 10 2008, 11:49AM
Proud Mary Registered Member #543 Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
Thank you for your interesting reply, Dr Conner.

I suppose if g1 was shorted to k, so that the screen now became the control grid, as you suggest, then gm and other operating parameters would have to be determined empirically to take account of this unanticipated configuration.
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Steve Conner
Thu Jul 10 2008, 12:17PM
Steve Conner Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706
I suppose so. It seems to work, though, with some tubes at least: Link2
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KresoLiubov
Thu Jul 10 2008, 12:56PM
KresoLiubov Registered Member #1153 Joined: Mon Dec 03 2007, 07:27PM
Location: Croatia
Posts: 213
Thanks for explanation it Dr. Conner. For me its hard in English.

My tube worked perfectly. Later i removed variac and just plugged it to mains after few seconds of warm up. This tube toke so much beating in my experimenting and wasn't orange and red only one time. I'm still surprised what tubes can take without blowing, amazed....
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Andrew L.
Thu Jul 10 2008, 08:39PM
Andrew L. Registered Member #515 Joined: Sun Feb 11 2007, 02:06PM
Location: Slovenia/Ljubljana
Posts: 94
You got some pretty nice results. But what is the actual spark length?
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KresoLiubov
Fri Jul 11 2008, 04:40AM
KresoLiubov Registered Member #1153 Joined: Mon Dec 03 2007, 07:27PM
Location: Croatia
Posts: 213
Andrew L. wrote ...

You got some pretty nice results. But what is the actual spark length?

Actual spark length was 30 cm. Its highest i could achieve. However i regret never building a staccato.
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