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RE: Would Class AB be closer to X or Y-axis of that graph?




The graph I showed in the previous post is the dynamic curve.

The dynamic curve takes into consideration the voltage across the tube, the idle current and the load impedance.

The graph above shows how a dynamic curve is derived.

This one happens to be of a not so linear tube with a poorly chosen operating point.

The plate voltage moves farther as the tube is driven to more current vs. when the tube is driven to less current. That is what creates harmonic distortion.

What one wants to do is operate the tube so the plate voltage moves in an equal way up and down from the idle point for the same amount of grid bias change.


Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"



Edits: 08/17/16

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