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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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