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- What is the difference between the terms wave, waveform, and signal?
A waveform is a representation of physical quantity such as voltage or a current over time If this physical quantity carries information then it is a signal In practice, however, the terms signal and waveform are often used synonymously
- What exactly are harmonics and how do they appear?
This is called Fourier analysis (if the original waveform is repeating) or Fourier transform (for any waveform) In case of a repeating waveform (like a square wave), when you do Fourier analysis you find that all the sines that compose the waveform have frequencies that are an integer multiple of the frequency of the original waveform
- Waveforms of BLDC motor - Electrical Engineering Stack Exchange
The waveform on the first picture is correct The hall effect devices are used to provide the timing to switch phases You cannot swap phases without changing the halls; otherwise the motor phases will switch at the wrong time, and the direction of the motor rotor's torque change to the wrong direction when the hall signal change
- rf - What are the waveforms of radio frequencies? - Electrical . . .
What is the waveform of radio frequencies? I thought they were sinusoidal; am I wrong? I started to wonder about radio frequency waves at the time (two years ago), if they were digital, because all systems are digital, but the problem was that radios were being used in World Wars I and II, and even before At that time, electronic devices were
- Sources of Harmonics (Odd and Even)
The question of "sources of harmonics" is sort of a chicken and egg question You can generate a waveform by combining harmonics, or you can generate harmonics by producing a waveform Usually, the second meaning is what is used The harmonics are generated by whatever process created the waveform
- What does Ethernet 100BASE-T signal look like?
100BASE-TX, the most common 100BASE in use today (and what's likely being used in your setup), uses a PAM-type variant called MLT-3 Below is a typical MLT-3 waveform Power over Ethernet (PoE) Power over Ethernet (PoE) injects a DC bias of about 48V onto the signal pairs to carry power to the far-end device
- dc motor - DC Machine Ouput Voltage Waveform - Electrical Engineering . . .
(B) is a good candidate for the resulted waveform when the brushes are in positions A and B on the commutator The basic place of the brushes should give full voltage and minimize the sparking Just when one lamel leaves the brush, another enters and add the same voltage to the series connection which is dropped off at the same time
- What Does 8 x 20-µs and 10 x 1000-µs Mean in Surge Testing Terminology
standardized transient impulses (or sometimes it's called a waveform) But what does it actually mean Why is there a multiplier in front of the time unit? The quoted line above is constantly mentioned in surge testing document But no where in the document does it mention what is the meaning of it Most Google search results point to Datasheet
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