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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 |