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Old December 26th 03, 06:21 PM
Richard Clark
 
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On Fri, 26 Dec 2003 17:05:15 GMT, Dave Shrader
wrote:

Richard Clark wrote:

SNIP

The ONLY advance we can claim in the last half century, is that no
power is lost to lighting up filaments in transistors.



Oh Boy!! 50 years of hamming, 43 years of engineering, 40 years of
marriage, 15 years of ministry, and 3+ years of retirement and NOW I
FINALLY FIND OUT WHY TRANSISTOR DON'T LIGHT UP!!!

I better hold on to my 3-500 Amplifier so I can demonstrated a ham
station to the neighborhood kids ... lots of light!


OK Fellows,

Such lackluster response to this single comment!

Lots of light Dave? Really? Then obviously you were not driving hard
enough!

When I broke into this business/hobby back then, I worked for a Ham in
his TV repair business. One of the notable experiences was watching
his final's plates glowing a cheery ruby red and the surrounding
envelope filled with a violet light. The Amp may have not been
"optimized" nor was the output free of spurs; the line voltage sagged
a bit in the effort (another tribute to the Thevenin model); but no
one was analyzing the situation. We didn't need a thermometer to
prove where the calories in plate resistance were.

It gives me the grins when these kind of debates about Thevenin
Resistors ignores the obvious. Some folks demand a carbon composition
resistor to fulfill their imaginings. :-)

73's
Richard Clark, KB7QHC
 
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