SET Asylum

Single Ended Triodes (SETs), the ultimate tube lovers dream.

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RE: Dennis talks 2A3... post-RMAF 2016

Posted by dave slagle on December 25, 2016 at 16:54:54:
I think we may be interjecting a bit too much into the accuracy of the sketches. It does appear clear that the anode area is directly related to the filament structure. In the drawings I referenced there are curves around the corner which seems slightly more plausible than the sharp angles shown for the 211. I do strongly suspect that the edges are much more softly defined and and the "boxiness" of the drawings represents the average behavior over an area.

The point I was trying to put forth was that the filament appears to define the "active" plate area and while 100% "anode activity" may be achievable, I am not convinced it is a figure of merit that we should solely base out tube choice decisions on.

dave