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Re: 5949 Thyratron specs
HTesla List wrote:
>
> > Subject: 5949 Thyratron specs
>
> >From hullr-at-whitlock-dot-comTue Sep 3 22:22:04 1996
> Date: Tue, 03 Sep 1996 10:59:46 -0700
> From: Richard Hull <hullr-at-whitlock-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Re: 5949 Thyratron specs
>
> Tesla List wrote:
> >
> > >From leyh-at-ix-dot-netcom-dot-comSat Aug 31 10:34:22 1996
> > Date: Sat, 31 Aug 1996 00:11:43 +0000
> > From: "G.E. Leyh" <leyh-at-ix-dot-netcom-dot-com>
> > To: tesla-at-pupman-dot-com
> > Subject: 5949 Thyratron specs
> >
> > Here's some general specifications for the 5949/5949A:
> >
> > Peak fwd anode voltage - 25kV
> > Peak anode current - 500A
> > Average anode current - 500mA
> > Anode heating factor - 6.3 e9
> > Peak output power - 6.0 MW
> >
> > Heater Voltage - 6.3VAC
> > Heater current(max) - 22.0 AAC
> > Tube heating time - 3 minutes
> >
> > Reservoir Voltage - 3.0 to 5.5V
> > Reservoir Current - 6.0 AAC
> >
> > Grid Drive (min) - 550V
> > Grid pulse duration - 2uS min
> > Grid impedance - 200 ohms min
> >
> > BASE CONNECTIONS:
> > (Clockwise, as viewed from bottom. The pin off by itself is pin 3)
> >
> > 1 - Heater
> > 2 - Cathode
> > 3 - Grid
> > 4 - Reservoir
> > 5 - Heater
> >
> > Top cap - anode
> >
> > This tube does not appreciate reverse conduction. (anode ablation)
> >
> > The 5949/5949A has had a long history of radar modulator service,
> > and pulsed-power supplies for small klystron tubes. The modern-day
> > replacement for it is the CX1140.
> >
> > It's always good to see that people are still interested in
> > ballistic electron devices. What are you going to do with these
> > thyratrons, anyway?
> >
> > -GL
>
> Greg,
>
> Thanks once again for a timely reply and with the right info!
>
> I hope to utilize these in my DC electrostatic generation system research
> with tight coupling which demands ultra quick switch times. I'll
> commutate the pulse from the thyraton by the usual method of "end of DC
> high power pulse shutdown". i.e. Rotary application of power pulse to
> anode-then trigger near end of rotary commutation. This way, I can
> control the front end of the rotary timing (thyratron) and let the rotary
> control the back end (shut the thyratron down.) Gotta figure some grid
> circuitry and triggering stuff and it will be tricky, but I hope worth
> the effort. No long sparks in this device, but the high peak power
> levels and rapid on times, variable dwell, etc, are needed.
>
> I used to fart with a lot of high power tube industrial electronics
> during my early engineering days (60's)
>
> Richard Hull, TCBORHi Guys,Back in the good old microwave/radar days they used rotary spark gap
switched thyratron systems, you might look into 1945 engineering books.Other
then the freq. being off the circuits might be similar.If it would be
helpful i could dig through my library? Does it seem that were going "Full
cicle" again"?
Bill hb-at-earthlink-dot-net