In a G2DAF amplifier, screen potential wanders from zero to approx. max.
Some say that screen potential can wander about with no serious
consequences. Please consider the constant-current curves for the 8171
posted at the beginning of my Web site. One set of curves is for a
screen potential of 500v. The other set is for 1500v on the screen.
Assuming a peak grid potential of +10v, with1500v on the screen, peak
anode current is c. 12a. However, with +10v on the grid and 500v on the
screen, .peak anode current is 3a. In other words, in the DAF
amp;lifier, gain is not constant. Will this affect linearity?
cheers
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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