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Re: Big Triode Tubes
Tesla List wrote:
>
> > > > Subject: Big Triode Tubes
>
> >From gowin-at-epic-1.nwscc.sea06.navy.milWed Sep 4 22:09:53 1996
> Date: Wed, 04 Sep 1996 09:10:56 -0500
> From: Dan Gowin <gowin-at-epic-1.nwscc.sea06.navy.mil>
> To: tesla-at-pupman-dot-com
> Subject: Re: Big Triode Tubes
>
> Tesla List wrote:
> >
> > > > Subject: Big Triode Tubes
> > Big snips,
> > > I was thinking about buying a Svetlana 4CX1600B High Performance
> > > Tetrode. Its a ceramic/Metal Tetrode that can disipate up to 1600
> > >
> > > I'll also get that catalog from Vacuum Tube Industries.
> > > Any comments are always welcome.
> > >
> > > Large round red HV caps. Burn baby burn.
> > > D. Gowin
> >
> > D.
> >
> > I have seen that John Freau (tube coil guy) has acquired a pair of
> > ceramic Eimac Tetrodes in the 4CX25,000 class. The problem is the
> > filament power at several hundred amps!! Gotta wind your own Xfrmer!
> >
> > Richard Hull, TCBOR
>
> Richard,
> How about an ARC welder! I'm being sarcastic, the tube I'm
> looking at is 7.5 V at 100 Amps on the filament. I'll probably use
> a balanced neon for the plate, but I'll need to experiment and find
> what filament currents will work. I already recognize that if the
> current is to low, it will take forever to heat the tube.
>
> Big, Red, HV capacitors. Burn baby burn.
> D. Gowin
D.,
The best thing for high current filament transformers providing high
voltage insulation is no needed (grounded grid operation) is to dismantle
a 20 amp variac core and hand wind 0 gauge wire around the doughnut core
I have made a nice cute little 5 VAC c.t. 400 amp fil source from this
arrangement.
Richard Hull, TCBOR