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Re: Tube spec. question 50l6, 6r6
50L6 is the same as a 6L6 but with a 50V filament (used in "all american 5"
configuration - later supplanted by 50c5)
per radio amateurs hanbook 1953 edition - 50L6:
beam power amp
50V150ma heater, use as class A amp, 110v plate,-7.5 grid,110 screen,4/11
screen ma, 49/50 plate ma, 8200 micromohs transconductance, 82 amp factor,
2Khom load, 2.2 watts
interestingly enough, the 6L6 is shown with 250 to 350 v plate, 6.5 watts
total power - no listing for 6lr6
----- Original Message -----
From: Tesla List <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, October 22, 1999 1:40 AM
Subject: Tube spec. question
> Original Poster: Grayson B Dietrich <electrofire-at-juno-dot-com>
>
> 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
>
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