PRC 947863 Power tube

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "W. Kranitz" <wkranitz-at-wi.rr-dot-com> 

I sent this information to the list on Aug. 17. At that time I
wasn't subscribed, so I don't know if this ever got through.
Since I'm interested in Tesla Coils, I decided to subscribe.
Please forgive me if this is a duplicate posting.

While searching for information on the net, I came across two
messages in your archive (see below my message). I thought the
list might be interested in what I found out.

The 947863 is a Power Tetrode used in high power Laser applications.
It is made by PRC Corporation of New Jersey, which now goes by
the name PRC Laser. The 946863 is their internal part number. Now
before you go calling them, they have no info to give on this part.
However, they claim it's equivalent to a National NL10277. National is
now part of Richardson Electronics and the spec. sheet is available
on the Richardson web site. This tube is a real powerhouse for it's
size and is capable of almost 9000W in a pulsed Laser application.

It is not a Triode, nor is it equivalent to a 3-1000Z as is
suggested below.

I hope this helps anyone who may still have some of these tubes.

If anyone has one of these to sell, contact me. I might be interested
if the price is right (I paid 9.99 for two on ebay).

Wes

-----------------------------------------------------------
Original poster: "Metlicka Marc by way of Terry Fritz 
<twftesla-at-uswest-dot-net>" <mystuffs-at-orwell-dot-net>

i would like to thank any and all that attempted to look up this tube
for me. i have found that it is a power triode built for military specs.
the parameters are the same as a 3-1000z.
has anyone out there used a 3-1000z on a vttc? are there any sites
explaining any of the design features of this tube?
thanks again.
marc


Tesla list wrote:
 >
 > Original poster: "Metlicka Marc by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <mystuffs-at-orwell-dot-net>
 >
 > hi all,
 > i have a large pentode that i can't find any info on and am hoping that
 > somebody (anybody!) can help me.
 > it is a: P.R.C. that has the shape of a 3-500z with a ceramic forced air
 > cooling base, the only numbers on it are: 947863, under that: made in
 > france and: 9952
 > this tube looks very durable and i would like to try a vttc with it,
 > also can anyone give me an idea of the air flow that might be used for
 > this type.
 > thank you in advance for any much needed info.
 > marc m.