In a message dated 7/7/2006 8:20:14 PM Eastern Standard Time,
k5and@austin.rr.com writes:
The tubes used were PL509 or PL519; the article interchanges both numbers,
so go take your choice. The switching supply delivers 1200V and is called "
an off-line, full-bridge, phase-controlled, quasi- resonant converter
operating at 100KHz.
The 3rd order distortion products are shown on the scope at -35db @ 2KW PEP.
The whole thing weighs in at 8kg.
Constructionwise, it is a very neat little package.
Remember, I am only the messenger here, with no dog in the fracas.
73
Dick
I don't know who else has read the article but the sweep tubes are operated
Class AB1 at low power levels and at higher levels it operates in EER mode, the
sweep tubes operate in switching mode similar to a Class-E EER linear
amplifier. 73 Todd WD4NGG
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