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What exactly are harmonics and how do they appear? "how are harmonics generated? The signal is just "on" or "off", how are there first, third, and fifth harmonics and why do they get weaker?" Although not a satisfactory answer, you could accept the fact that any physically realizable continuous-time signal can be represented as an infinite sum of sinusoids (that's a Fourier series) Thus, any sinusoidal signal doesn't have harmonics, or it
How do I calculate THD? - Electrical Engineering Stack Exchange I want to calculate the total harmonic distortion of the signal using this graph and formula The formula is taken from this page: Calculating harmonic distortion First Question: So my problem is to
filter - What is the harmonic content of a PWM signal? - Electrical . . . To properly design a filter for this application to hit a specific harmonic distortion target, I need to know the harmonic content of the PWM signal How can I predict what that harmonic content is? Is it going to vary dramatically with the pulse widths? Or will there be certain simplifying assumptions I can make?
Why dont we use the third harmonic in power transmission? And the whole thing is even further complicated by loads that either abuse the harmonic content (nonlinear loads like rectifiers), or literally don't know what to do with it (the harmonic energy just causes useless heating in motors, and maybe torque pulsation as well)
signal - Whats the relationship between harmonic distortion and . . . Harmonic Distortion is not related to intermodulation distortion Here is another point I make, if you remove part of a sine wave, the harmonic spectrum exactly matches the harmonic content of that feature Here is a shot of the peak of a sine wave clipped off, all by itself and its spectrum Notice that the spectral pattern exactly matches the pattern of harmonic distortion of the clipped
How Exactly Does a Push-pull Pair Cancel Even Harmonics? As far as I can make out, it's favoured because it has low harmonic distortion and this, it seems, is down to it's push-pull configuration It's often said that a push-pull pair cancels even harmonics, but I'm interested to know exactly how this happens
fourier - How do I calculate THD in proteus? - Electrical Engineering . . . 0 I know how to plot the Fourier transform, but is there a more precise way to measure the total harmonic distortion? I have this graph: As you see, there's only one distinguishable component at 1 kHz which is what I want I need a THD less than 5% Is the ThD zero here?
Why harmonic distortion and not at other frequencies? In understanding harmonic distortion, one piece of the puzzle that is missing for me is: - why does the distortion manifest at harmonic frequencies and not other frequencies Feel free to simply point me at a textbook reading that explains it, if that's easier! I understand that non-linear loads can create distortion