[Prev][Next][Index][Thread]
Re: Tube spec. question
In a message dated 10/22/99 7:30:22 AM Central Daylight Time,
tesla-at-pupman-dot-com writes:
<< Subj: Tube spec. question
Date: 10/22/99 7:30:22 AM Central Daylight Time
From: tesla-at-pupman-dot-com (Tesla List)
To: tesla-at-pupman-dot-com
Original Poster: Grayson B Dietrich <electrofire-at-juno-dot-com>
Grayson,
Hi All,
could anyone tell me the plate voltage, current, and dissipation ratings
of these two tubes I have:
a 50L6GT, which is listed as a beam power amplifier, whose basing diagram
is a tetrode, and has filament needing 50V at 0.15v amps!
a 6LR6, which is also listed as a beam power amplifier, but in this case
the basing diagram has a screen, grid, and a third element. Pentode? it's
filament needs a more conventional 6.3V at 2.5 amps.
I'm thinking of using one of these in a very small vacuum tube coil,
after or while building one using an 811A.
Also, when using a tetrode, or pentode for that matter, can one just wire
the extra electrodes to the grid and use it like a triode in a TC? Or,
would actually using the screen on the tetrode be useful, and would it be
fairly simple to provide the sort-of 'reversed' bias on the screen to
accelerate the electron flow whilst the tube is in conduction?
thanks,
Grayson Dietrich
http://www.electrophile.8m-dot-com
Grayson,
viewed from the bottom and clockwise from the gap,
the pin out on the 6LR6 is as follows:
1 & 12 Fil 6.3 V -at- 2.5 A
2 cath E plate 900 V
3 & 11 grid 2 E g 2 220 V
4 & 10 grid 3 P watts 30
5 grid 1 I cath 375 mA
cap plate
Viewed from the bottom and clockwise from the key,
the pin out for the 50L6 is:
1 NC E plate 200 V
2 & 7 Fil E grid 2 125 V
3 plate E grid 1 8 V (AF)
4 grid 2 output 3.8 W
5 grid 1
8 cath & grid 3
Hope this helps.
ZEKE