Re: Tube Question...

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

Original poster: FutureT-at-aol-dot-com 

In a message dated 7/13/04 1:00:53 PM Eastern Daylight Time, 
tesla-at-pupman-dot-com writes:

Brett,

That's a small tube rated at 60 watts plate dissipation.
You can see specs for the "C" which is a strengthened
version of the "B" at:

<http://www.cpii-dot-com/eimac/catalog/170300.htm>http://www.cpii-dot-com/eimac/catalog/170300.htm

It's a pulse rated tube rated at 20kVDC peak plate voltage.
I've never tried such high voltage tubes in a tube coil.
I don't know how much spark length can be obtained
from it as a practical matter.

Basically any triode or pentode vacuum tube of great enough
power handling capability can be used in a tube coil.

John


>All,
>
>This question is mainly directed to John Freau, Steve
>Ward, and all the other VTTC enthusiasts.
>
>I have a ham radio friend who recently came into a
>large lot of tubes due to a silent key (ham who passed
>away) estate giveaway.  There are many I have not
>heard of....lots of power tubes with metal heat sinks
>and many other glass tubes new in the box.  One in
>particular I was curious about was a brand new Eimac
>4PR60B.  If this would be suitable for VTTC use I
>would probably be able to trade something for it or he
>might just hand it to me.  Also there was a matched
>pair of 4-125's.  I believe I recall those being on a
>list John emailed me a while ago.  I will check that
>list.
>
>It would be nice, plus it would encourage more VTTC
>experimentation if there was a big list of usable
>tubes somewhere on Hot-Streamer.  It would be even
>better if there was also a directory which held text
>files containing vacuum tube pinouts.  For some, I'm
>sure these things are elementary, but I think such a
>resource could really benefit the beginner.
>
>-Brett
>