Minor update.
Plate choke started to make int popping noises in 2 x places on it's
windings, when amp run at 3.3 kw out.
I Re-designed the plate choke. Original choke was 52 uh with it's 1st
series resonance @ 26.990 mhz. Problem was, the 2nd series resonance was
too close to 6m.
New choke is 7.784 uh and wound with 16 ga thermalize magnet wire on a 1"
teflon rod. 22 turns....and resonates at 69.247 mhz.
(I since came up with a slightly better version still. 9 uh, and wound on
3/4" Teflon rod, 37 turns of 16 ga....and resonates at 73.114 mhz).
Also re-designed the safety choke that is in parallel with the vac load
cap. It's now just 7 uh. (19 ga, wound on 1" teflon rod).
The temp 240 vac line, used for testing was way too small a gauge, and >
50' long. New 100 amp breaker gets installed in abt 1 hr, with a real
short (7-10') 2 ga power cable, from breaker to B+ supply. We will find
out pretty quickly today, if things have been optimized, and all minor
bugs out.
https://www.youtube.com/watch?v=1P4H0LgZ89k
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