In a message dated 7/17/2007 4:43:47 P.M. Eastern Daylight Time,
carlseye@verizon.net writes:
Lou: curiosity here.!! After replacing the grid resistors you said you also
changed input voltage to 220; did you not check the output power after
changing resistors BUT , before changing to 220 input power.!! Just wondering
if
there might be some difference here.!!!
carl / kz5ca
Carl, No, the first data tests were done with 120 volt line with the
original resistors. The second test was with new 33 ohm gold banded resistors
and
220 volt line. I should have done the tests with all the same line voltage.
My experience withe these amps tells me that the closer the 33 ohm resistors
are to 33 ohms and the closer they are "together" in value makes for a more
stable amplifier. This amp worked OK the way the original resistors were, but
worked better when they were changed.
My whole point of the posting was to share the information I have
experienced first hand. There was a posting recently about not enough people
"sharing
information", so since I have experienced this first hand I thought I would
report on it. That's all.......Lou
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