[ARC5] WTB: Rectifier Tube Type 15R

[Dennis Monticelli]

The high filament power to plate dissipation rating is a given for a high
pulse power tube.  You can get up to 80mA peak per watt of filament power
from a thoriated tungsten filament.  So 23W of filament translates to 1.85A
max of brief cathode pulse.  Pretty incredible for such a tiny tube.

Dennis AE6C


On Tue, May 20, 2014 at 6:14 PM, Fuqua, Bill L <wlfuqu00 at uky.edu> wrote:

>   You may find that for the plate dissipation these draw tons of filament
> power.
> 20 Watts!!! 5v at 4A
> 73
> Bill wa4lav
>
> ________________________________________
> From: ARC5 [arc5-bounces at mailman.qth.net] on behalf of J. Forster [
> jfor at quikus.com]
> Sent: Tuesday, May 20, 2014 5:59 PM
> To: Dennis Monticelli
> Cc: boatanchors at mailman.qth.net; vintage-military-radar at yahoogroups.com;
> armyradios at yahoogroups.com; ARC-5 Maillist; Milsurplus
> Subject: Re: [ARC5] WTB: Rectifier Tube Type 15R
>
> Might work, but I'd much rather find a 15R though. I have plenty of 15Es.
>
> Best,
>
> -John
>
> ==================
>
>
>
> > John,
> >
> > I have not seen a 15R, but I have seen 15E's, which appear to be more
> > common.  I wonder if one could tie the grid to the cathode and have it
> > work
> > like like a 15R.  Seems like it would do the job.  Might be worth a try
> if
> > you cannot rustle up an authentic 15R.
> >
> > Dennis AE6C
> >
> >
> > On Tue, May 20, 2014 at 1:01 PM, J. Forster <jfor at quikus.com> wrote:
> >
> >> Hi,
> >>
> >> I'm looking for one (or possibly two) 15R HV rectifier tubes for an old
> >> RADAR transmitter.
> >>
> >> The tube is a funky-looking little tube, about plum size. Data sheet and
> >> pic here:
> >>
> >> http://www.radiomuseum.org/tubes/tube_15r.html
> >>
> >> If you have one available, please drop me a note off-list.
> >>
> >> Thanks,
> >>
> >> -John
> >>
> >> ====================
> >>
> >>
> >>
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