Distortion: The Cause Of Harmonics And The Lie Of THD
If you are frustrated in your studies of audio and RF electronics with the vague, unsubstantiated and sometimes contradictory texts on Harmonic Distortion (like Wikipedia which is totally wrong) then this book is for you. New studies with high precision instrumentation and mathematical models prove that harmonics are not well understood by anyone in the world today, except for the author and the readers of this book. I love books, and one day, volunteering at a library book sale, I picked up an electronics book. I flipped to the index, looked for Harmonics and laughed my head off. Every book out there is WRONG, here is what this one said, [my comments in brackets]."For example, theoretically speaking, [meaning, I'm taking a wild guess here because I really don't know, nobody does] a square wave contains all harmonics, but predominantly odd harmonics [WRONG! A square wave contains only odd harmonics if the duty cycle is exactly 50%, if the duty cycle is anything other than 50%, it will also contain even harmonics]By applying a square wave to an integrator, the odd harmonics are removed, leaving the even harmonics in the form of a triangle wave. [WRONG! A triangle wave works the same way, so a 50% Trise/Ttotal triangle wave will have only odd harmonics, and if the rise/fall ratio becomes anything other than 1:1, even harmonics will appear and I have the formula]"Interestingly, when relating this example to a friend he said "Well, it probably was an older book." Hell, it could have been printed this year, every other book out there is dead WRONG on harmonics, I am the only one who actually knows the formula for harmonic distortion, and it's pretty much just geometry, no calculus involved. It's so simple you will hate yourself for not figuring it out.
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- PDF | 96 pages
- CreateSpace Independent Publishing Platform; 1 edition (April 28, 2015)
- Engineering & Transportation
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