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'load lines for dissimilar output tubes?'
Author:Malcolm Irving (registered user: 29 posts )
Date: Fri, Mar 17th, 2017 @ 14:54 ( . )

On 03/17/2017 @ 14:17, CChurchill wrote :
...
: I guess my questions would be, first, are you trying to match up the point within the curves so that both types of tubes begin to transition, basically, into class B?
: If so, would it be equally as important to have both types of tubes enter cut off as well as grid clamping? 6V6s and 6L6s have very different and put sensitivities, so I think it would be difficult to maintain load balance using the same primary.
...


Yes, I think there could be various changes in slope in the load lines, as different tubes go into cut off or grid clamping (including those on the 'other side' of the push-pull).
Biasing the 6V6 and 6L6 independently might give some control over this.
It's tricky, but I think whichever of the tubes grid clamps first, might also clamp the grid signal to the other, depending on the design of the input circuits to the grids.

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3/17/2017 @ 19:51--CChurchill

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