[Amps] 2kw sweep tube amp....again

[ToddRoberts2001 at aol.com]

In a message dated 7/7/2006 8:20:14 PM Eastern Standard Time, 
k5and at 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