> I've gotten my early AL80 one-lunger to work pretty well,
> and added many protection mods (no, no nichrome involved).
> One thing I noticed is it has a 27 ohm resistor (actually
> 3 x 82 ohm 2 watt) in series with the cathode. I think
> this provides negative feedback, and also increases the
> required drive for full output to 100 watts. Am I correct
> here? Does it improve linearity? Are there any downsides
> to it?
That's right Tony. A series resistance right at the cathode
adds negative feedback.
That generally increases IM performance.
73 Tom
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