Re: Tube Tesla Coil

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

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

You might also check into Eimac (now CPI).  "Care and Feeding of Power Grid
Tubes" is their book on application, slowly appearing online.

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, October 30, 2001 3:53 PM
Subject: Re: Tube Tesla Coil


> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<Mddeming-at-aol-dot-com>
>
> In a message dated 10/30/01 1:47:44 AM Eastern Standard Time,
tesla-at-pupman-dot-com
> writes:
>
>
>
> >
> > Original poster: "Ed Phillips by way of Terry Fritz
<twftesla-at-qwest-dot-net>"
> > <evp-at-pacbell-dot-net>
> >
> > One thing to remember about "big"  RF power tubes; they take lots of
> > filament power too!  Also, filament voltage is quite critical if you are
> > pushing them +/- 5% is pretty typical.  Running too low will reduce
> > output and too high will reduce tube life.  Moral - know your tube specs
> > and adhere to them.
> >
> > Ed
> >
> >
>
>
>
> I'll second this. Knowing the specs is critical.
> You might want to check out "RCA Transmitting Tube Manual" a.k.a. "RCA
> technical manual TT-5". This lists most US tubes up to 4KW plate input. A
> reprint is available from Antique Electric Supply of Tempe, AZ.
>
> For the Absolute Mutha of all VTTC's an RCA 5770 Power Oscillator triode,
> occasionally available on eBay (1 per Year), is not in the above book, but
is
> rated at about 26KW as a class C Oscillator. Specs are available on line.
I
> think the last one sold for about $600. It requires a dedicated fan and
cold
> water plumbing.
>
> On a more realistic note, type 7213 has 1.5KW max plate dissipation, 2.5KW
Max
> plate input at 2500KV, as class C Oscillator, is forced-air cooled and so
> requires no plumbing.
>
> Matt D.
>
>