In article ,
Randy or Sherry Guttery wrote:
Randy or Sherry Guttery wrote:
a bunch of stuff...
Let me add a point... when I originally looked at the schematic - the
saturable reactor was drawn as a transformer - though it didn't take
long to figure out that it had to be a form of saturable reactor rather
than a transformer... (being an early schematic, I doubt the "standard"
for indicating saturable reactors had been established, and certainly
not yet in common use).
That only leaves figuring out whether the S/W is a two or three legged
configuration (are the two load windings on the same leg). As noted - a
picture might tell a lot.
Dave has now posted a picture, it appears to be a three leg core with
all three windings on the central leg.
Also - note that the GE version is a fully
buffered (isolated) and driven system - while the S/W's system is part
of the RF / IF B+... the differences make a significant impact on how
the two circuits act (and interact)...
I don't see how the "buffer" in the GE circuit makes any difference at
all, S-W simply make the RF and IF tubes do double duty, serving as a
"buffer" in addition to their normal functions. The buffering aspect
seems to work in an identical fashion to the dedicated "buffer" in the
GE radio.
Regards,
John Byrns
--
Surf my web pages at,
http://fmamradios.com/