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#1
Posted to rec.audio.high-end
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Ideal Amplifier Definition
This ought to convince even the hardest heads among us that the term "Ideal
Amplifier" is a legitimate technical term with a concrete, and well understood meaning. Again, it has nothing to do with taste or aesthetics. It simply means what it means. Wikipedia: http://en.wikipedia.org/wiki/Amplifier "An ideal amplifier would be a totally linear device, but real amplifiers are only linear within limits." Brown University Dept. of Engineering: http://www.brown.edu/Departments/Eng...res/AmpLec05.h tml "An ideal amplifier will pass the input signal through to the output undistorted but enlarged (gain set by user), with no delay. It will not be affected by the output impedance of the source (sensor). In addition the ideal amplifier will be able to drive any load: supply any current." University of Alberta Physics Department: http://www.piclist.com/images/ca/ual...h/phys395/note s/node101.html "The following are properties of an ideal amplifier, which to a good approximation are obeyed by an operational amplifier: 1. large forward transfer function, 2. virtually nonexistent reverse transfer function, 3. large input impedance, (any signal can be supplied to the op-amp without loading problems), 4. small output impedance, (the power supplied by the op-amp is not limited), 5. wide bandwidth, and 6. infinite gain," Want to continue arguing this point? I can cite more examples if needed. Audio_Empire |
#2
Posted to rec.audio.high-end
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Ideal Amplifier Definition
On Sun, 18 Mar 2012 20:21:36 -0700, ScottW wrote
(in article ): On Mar 18, 7:38=A0am, Audio Empire wrote: This ought to convince even the hardest heads among us that the term "Ideal Amplifier" is a legitimate technical term with a concrete, and well understood meaning. Again, it has nothing to do with taste or aesthetics. It simply means what it means. Wikipedia: http://en.wikipedia.org/wiki/Amplifier "An ideal amplifier would be a totally linear device, but real amplifiers are only linear within limits." Before the argument that no such thing as an ideal amp exists is posed, I would add that the limits within which audio amplifiers must be linear (including the limits of said linearity) are so benign that ideal amplifiers within the limits required for audio amps are the norm rather than the exception. ScottW Irrelevant to the point, Scott. Just admit that you were wrong and that the term "Ideal Amplifier" is, in fact, a legitimate technical term that has nothing whatsoever to do taste or aesthetics, and move on. |
#3
Posted to rec.audio.high-end
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Ideal Amplifier Definition
On Mon, 19 Mar 2012 16:58:10 -0700, ScottW wrote
(in article ): On Mar 19, 5:48am, Audio Empire wrote: On Sun, 18 Mar 2012 20:21:36 -0700, ScottW wrote (in article ): On Mar 18, 7:38am, Audio Empire wrote: This ought to convince even the hardest heads among us that the term "Ideal Amplifier" is a legitimate technical term with a concrete, and well understood meaning. Again, it has nothing to do with taste or aesthetics. It simply means what it means. Wikipedia: http://en.wikipedia.org/wiki/Amplifier "An ideal amplifier would be a totally linear device, but real amplifiers are only linear within limits." Before the argument that no such thing as an ideal amp exists is posed, =A0I would add that the limits within which audio amplifiers must be linear (including the limits of said linearity) are so benign that ideal amplifiers within the limits required for audio amps are the norm rather than the exception. ScottW Irrelevant to the point, Scott. Just admit that you were wrong and that the term "Ideal Amplifier" is, in fact, a legitimate technical term that has nothing whatsoever to do taste or aesthetics, and move on. Actually, I (ScottW) was trying to address the point that "Scott" had previously made in another post. Having worked a bit on broadband power amplifiers for digital cellular communications I am painfully aware of how relatively easy it is to show that for all practical purposes, the technically ideal audio amp, no matter how sterile sounding to some, has been around for quite a few decades. ScottW Sorry that I got my Scotts confused. 8^) |
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