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- What exactly are harmonics and how do they appear?
The blue sine which shows 1 period is the fundamental Then there's the third harmonic (square waves don't have even harmonics), the purple one Its amplitude is 1 3 of the fundamental, and you can see it's three times the fundamental's frequency, because it shows 3 periods Same for the fifth harmonic (brown)
- How do I calculate THD? - Electrical Engineering Stack Exchange
Of course, after a certain index of harmonic the THD measurement will not change much, but that depends on the frequency content or the original signal itself, and also your accuracy requirement So it's up to you i e you can start with up to 10th harmonic and calculate the THD, then up to 11th to see if it changes much, etc Instead,
- filter - What is the harmonic content of a PWM signal? - Electrical . . .
Suppose I'm using a 3 6 kHz carrier to reproduce a 60 Hz sine wave 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?
- Help me understand FFT and harmonic distortions - Electrical . . .
I'm new to FFT and harmonic distortions I'm dealing with a power system where the phase currents are distorted Now I don't understand the concept of FFT and why the harmonics seen in FFT relate to the current waveforms FFT shows how the current waveform changes in gain by frequency instead of time
- amplifier - Calculate total harmonic distortion - Electrical . . .
Total Harmonic Distortion fundamental frequency clarification 1 Efficient method of measuring total
- 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
- rf - Mixers and LO Harmonics - Electrical Engineering Stack Exchange
The problem arises when we consider what happens when the component at \$3F_{LO}+\Delta\$ gets mixed with the \$3F_{LO}\$ harmonic, as it creates a difference frequency \$\Delta\$ and so will interfere with the signal we wanted to extract
- How do I simulate an RF mixer in PSS or harmomic balance with an . . .
However, I have severe trouble getting a harmonic balance or periodic-steady-state simulation to succeed with sensible results When I use the shooting engine, PSS fails to converge with messages such as the following: Conv norm = 44 7e+03, max dV(I28 net8) = 11 032 V, took 14 92 s
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