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Re: Tube CX1140 = H2-thy..



Subject:      Re: Tube CX1140 = H2-thy..
       Date:  Fri, 16 May 1997 15:12:24 -0700
       From:  gene lambert <tesla-at-cyberverse-dot-com>
Organization: Tesla Electric, LTD
         To:  Tesla List <tesla-at-pupman-dot-com>
        CC:   tesla-at-poodle.pupman-dot-com
 References:  1


Tesla List wrote:
> 
> Subject:  Re: Tube CX1140 = H2-thy..
>   Date:   Sat, 17 May 1997 01:52:21 +0300 (EET DST)
>   From:   Kristian Ukkonen <kukkonen-at-cc.hut.fi>
>     To:   Tesla List <tesla-at-pupman-dot-com>
> 
> On Fri, 16 May 1997, Tesla List wrote:
> 
> > From:         gene lambert <tesla-at-cyberverse-dot-com>
> >
> > I have a brand new tube that my brother got from a friend. However, my
> > tube manuals do not mention it. I think it may be a large triode, and
> > might be suitable for tc use. Could anyone tell me something about it?
> > The manufacturer on the base of the tube seems to be EEV (Made in
> > England.)
> > The model number is CX1140
> 
> What a find!
> 
> That tube is a H2 thyratron/tetrode. Here are some specs (full specs
> soon at nic).
> 
> "Suitable for use at high pulse repetition rates, in parallel for
>  higher powers, or for switching longer pulses. Hydrogen reservoir
>  operating from the cathode heater supply is incorporated."
> 
> Peak forward anode V = 25kV max
> Peak anode current = 1000A max
> Average anode current = 1.25A max
> Rate of rise of anode current = 5kA/us max
> 
> Cathode connected to mid-point of heater
> Heater V = 6.3V
> Heater I = 21.5A
> Cathode heating time = 5 minutes
> 
> NOTE: "X-rays are emitted by cx1140 from the region of the anode , but
> the radiation is usually reduced to a safe level by the metal panels
> of the equipment in which the tube operates."
> 
> Look at nic for full specs soon,
> 
>   Kristian Ukkonen.
> 
> ---------------------------------------------------------------------------
> | Kristian Ukkonen       |  Do as thou wilt shall be the whole of the
> law |
> | kukkonen-at-alpha.hut.fi  |_____  Chance favours the prepared mind
> |-------
> | http://www.hut.fi/~kukkonen |  Fear is the mind-killer  |---------
> -----------------------------------------------------------
> 42


Thank you, Kristian, for the reply.

Looks like, if I am to use this tube, I will need to build it into a
metal enclosure. What a shame, it would add quite a "look" to a TC
design. Now, if I can just find out some more specs, such as pinouts,
design hints, etc. Anyone? 

Gene Lambert