I think we are talking about two different curves.
1. V-I curve of plate with constant bias voltages ( this determines how
good the constant current sink is over a range of plate voltages) you must
stay away from the region where the plate voltage is close to the screen
voltage.
2. The non-linear relationship between the grid voltage and the plate
current. You want a linear control knob for your instrument. And the
answer is yes for a first order correction as long as you meet the
conditions stated in item 1.
What plate voltage range do you want? Do you plan to use op-amps or other
solid state devices to generate g2 voltages? If you are generating
voltages for both g1 and g2 using solid state amplifiers, why not go to a
feedback system to achieve linearity?
73
Bill wa4lav
At 07:10 AM 6/3/2005 -0700, you wrote:
>Yes, I did mean by sending an offset and scaled and/or inverted
>version of the control grid driving signal to the screen grid as well.
>Can't this be set up to cause a somewhat inverse distortion,
>straightening out the transfer curve?
William L. Fuqua III P.E.
Electrical Engineer
CP 177 Chemistry Physics Building
Department of Physics and Astronomy
University of Kentucky
Lexington,KY 40506-0055
Phone: 1-859-257-4155
e-mail: wlfuqu00@uky.edu
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