Quote:
Originally Posted by Al Skierkiewicz
/.... I know, you are saying "It's digital! Why a linear amplifier?". Digital transmission is still an analog signal, modulated and filtered, with an encoded serial digital signal.
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Thanks for reminding us of this simple, important fact, Al. Analog has not really been killed or scrapped. The systems we nickname 'digital' only look like streams of ones and zeroes when viewed at signal processing time scales. At smaller time scales, which are always of interest when we consider the economics of distributing those signals, they are really analog.
Of course, when a lossless, zero-delay, zero-cost power switching device is invented, linear (analog) power circuits will be obsolete. We are not there yet.
__________________
Richard Wallace
Mentor since 2011 for FRC 3620 Average Joes (St. Joseph, Michigan)
Mentor 2002-10 for FRC 931 Perpetual Chaos (St. Louis, Missouri)
since 2003
I believe in intuition and inspiration. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research.
(Cosmic Religion : With Other Opinions and Aphorisms (1931) by Albert Einstein, p. 97)