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RE: [TCML] 715B VTTC
Hi Vladi, I also am a tube collector. I love the things. I have about 25 or
so tubes. Use a 304TL for your VTTC. One 304 will do a lot of work. One
thing, all of the tubes with tantalum anodes (833, 811, etc) don't let the
anode get too hot. Dull red is hot enough. 304's can do bright red, I would
hold the line on orange though. I have constructed several VTTC's, all have
been fun. Good luck and post pictures PLEASE James
-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of Vladimiro Mazzilli
Sent: Friday, September 24, 2010 5:36 AM
To: Tesla Coil Mailing List
Subject: R: [TCML] 715B VTTC
James this VTTC with 715 is only a toy, I'm a tube collector, for this
purpose I have several tube: from eimac 100th,250th,and 9pieces of 304th
2x3-1000Z in glass, metallic I have 1 3cx2500F3 1 3CX2500e3 2 3cx10000a7
aircooled, 1 yu191 and Y676b (a giant switch tube 3,5MW peak at 60kV 22kg
weight) watercooled
Several 572B, 803, 805, 806, 810, 811, 813, 860, 7 833A 2 833C 2 GU45 1GU39B
and more other from Philips Siemens etc.
Vladi
Vladimiro Mazzilli
Ricerca & Sviluppo
Aros
Via Somalia 20
20032 Cormano (MI)
Tel. +39 02 66327266 - Fax. +39 02 66327528
Skype Id: - VoIp:
E-mail: V.Mazzilli@xxxxxxx
Web: http://www.aros.it
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-----Messaggio originale-----
Da: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] Per conto di
James
Inviato: giovedì 23 settembre 2010 19.21
A: 'Tesla Coil Mailing List'
Oggetto: RE: [TCML] 715B VTTC
Some snipage: Hi Valdi, There are several things wrong in using the 715 for
a VTTC. The main problem is the 65W of anode dissipation. Over the years ( I
have been playing with VTTC's since the late 50's), I have tried several
tubes. I feel the low mu power triodes are the best. Tubes like 833, 304TL,
5868 are good choices. Tubes like 811A, 813, 3-500Z all worked ok, but not
as well. The flying lead 3cx3000 tube is a beast. It requires forced air
cooling, and a large filament xmfr. There are some great Russki power
triodes. I have an RY-10 and it's a monster. Water cooled anode and large
"standoff" distances. Valdi, I really think you should keep looking. James
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