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Re: Tube Data
Hi Guys,
thanks for all your help. I've eventually managed to get the
data from an online database. Its a 2250W transmitter tube. The anode
dissipation is 500W, plate voltage 5kV, anode current 400mA.
I wonder if anyone has ever tried a tube driven magnifier?
To get the impeadance match right you'd need a large primary which would
suit the tight coupling of a magnifier driver.
Regards
Nick Field
> Original Poster: "Bryan L. Kaufman MD, MS" <bryan-at-apexrad-dot-com>
>
> > Original Poster: "William Parn" <parn-at-fgm-dot-com>
> >
> >
> > 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
> >
> >
> If the anode is angled, the probability increases that it's an xray tube.
> The anode is referred to as the target in this case and the angle directs
> the bremsstrahlung radiation toward a side port in the casing. If the
anode
> is not angled, it sounds like it could be a tetrode. The description is
very
> similar to a couple of Thompson TH 5186's I have. These are used for power
> supply switching in CT Scanners and in radio transmission.
>
>
>