RE: Tube Data

• To: tesla-at-pupman-dot-com
• Subject: RE: Tube Data
• From: "William Parn" <parn-at-fgm-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Mon, 21 Feb 2000 12:54:20 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Greets,

> -----Original Message-----
> From: Tesla List [mailto:tesla-at-pupman-dot-com]
> Sent: Sunday, February 20, 2000 2:56 PM
> To: tesla-at-pupman-dot-com
> Subject: Tube Data
>
>
> Original Poster: "Megavolt Nick" <tesla-at-fieldfamily.prontoserve.co.uk>
>
> Hi All,
>          today I picked up a massive tube and wondered if anyone
> had any idea
> what it is.  The only number on the thing is QB 5/1750. I've
> looked it up on
> most of the net tube data sites and none of them have heard of
> it.  The glass
> bulb is about 4" diameter by 5" high with a big heatsunk feed
> through on the
> top and 5 rather beefy pins on the bottom.  The anode looks like about 1½"
> diameter.
> The filament xfmr looks like about 200VA and the leads to the
> tube were 2mm
> thick copper.
> Inside the unit I got it out of there was a 24kV capacitor bank -
> but I don't
> know if they were connected while in operation as half the thing
> was missing.
>
> Thanks In Advance
> Nick Field
>
>

I am no expert here, but it sounds like you got yourself a X-Ray
tube.  A friend of mine has an old X-Ray tube and it has the
big thick 1.5" anode you are speaking of here.  I think 24KV is
enough power for a X-Ray probably a week one but still there.

Cheers, and be careful,
Bill Parn

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