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In a distortion factor meter the filter at the front end is used to suppress which type of hormonics?
Wiki User
∙ 14y ago
In a distortion factor meter the filter at the front end is used to suppress which type of hormonics
Wiki User
∙ 14y ago
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What is the function of a choke in a variable speed drive?
It is used to reduce the hormonics in the system generated by Electronic components like VFDs etc. generaly we can consider input side as well as out side of the VFD. if u see the IEC1000-1/2/3 we have to consider 3% or 5% choke/filter at i/p and o/p of the vfds. if u have still more doubts contact :nsn.rajs@gmail.com
What is relation between roll off factor bandwidth and bit rate?
The roll-off factor of a digital filter defines how much more bandwidth the filter occupies than that of an ideal "brick-wall" filter, whose bandwidth is the theoretical minimum Nyquist bandwidth. The Nyquist bandwidth is simply the symbol rate expressed in Hz: Nyquist Bandwidth (Hz) = Symbol Rate (Sym/s) However, a real-world filter will require more bandwidth, and the excess over the Nyquist bandwidth is expressed by the roll-off factor. Suppose a filter has a Nyquist bandwidth of 100 MHz but actually occupies 120 MHz; in this case its roll-off factor is 0.2, i.e. the excess bandwidth is 0.2 times the Nyquist bandwidth and the total filter pass-bandwidth is 1.2 times the Nyquist bandwidth.
State three advantages of over-sampling?
1) It greatly simplifies the design of the low pass filter which follows the DAC, which has to attenuate the aliasing noise but not the signal. Oversampling increases the gap between these, simplifying the low pass filter. 2) It allows for interpolation and thus much lower sine wave distortion figures. 3) It allows for superior DAC architectures such as delta-sigma and 1 bit DACs.
What is the advantage of capacitor filter over inductor filter?
An inductive filter is in fact an LC circuit in which an inductor is connected in series with the capacitor. This arrangement is also known as a low-pass filter. http://www.answers.com/topic/inductive-filter
What is the main characteristic of a Butterworth filter?
Butterworth filter works as an ideal low pass filter.Butterworth filter is best suited for the closed loop gain to be as close to 1 as possible within the passband.Roll-offs become steeper,they approach the ideal filter more closely.
In a distortion factor meter the filter at the front end is used to suppress?
fundamental components Bismita
Which harmonics is suppressed by the front end filter of a distortion factor meter?
fundamental wave component is filtered in the front end.
Q factor of low pass filter?
The Q factor is describing how sharp the dropoff of the filter is relative to the pass band. Wikipedia has a decent writeup on Q factor. The more components you use to make the filter, and the lower the cutoff frequency, the higher the Q will be.
What is a distortion analyzer?
A distortion analyzer is an electronic test instrument that measures the accuracy of an electronic circuit at reproducing a wave. For instance, an audio amplifier might have a sine wave input to it, and the distortion analyzer measures how close the output is to a sine wave. If the output is clipped, the wave will be distorted, and the analyzer will measure the amount of harmonics present. The analyzer does this by supplying a low distortion sine wave test signal which is connected to the device under test. The output from the device is connected to the input of the analyzer where the original input signal is filter out with a precision notch filter. Anything left over after filtering represents distortion components and noise. Amplifiers will frequently have a "Total Harmonic Distortion plus Noise" specification which is an accurate term for the quantity measured by a distortion analyzer. There are many manufacturers of distortion analyzers. The Hewlett-Packard models 331a and 333 are laboratory standard instruments. Other notable manufacturers are Sound Technology Corporation and Textronix.
Advantages and disadvantages of chebyshev filter?
Advantages are getting a steeper decline in the band. Disadvantages are having more distortion in the wavelength frequency available.
What is The damping factor of an active filter?
good things
What is warping in Photoshop?
Warping is a type of distortion that can be used to change the structure of the picture. You can move the pixels in the picture. Go to Filter, Distort, then Warp to use this tool.
Derive the expression for ripple factor of pi filter?
ripple factor:=21/2 /3 *Xc/XL
What is RFI filter and does it go with fuel filter for 99 escalade?
NOISY FUEL PUMPS CAN SOMETIMES GET PICKED UP BY THE RADIO (RADIO INTERFERENCE) RFI FILTERS MOUNTED ON FILTER SUPPRESS ANY ANNOYING FREQUENCY NOISE. I FOUND MY ANSWER BY GOOGLING MY QUESTION. 99 ESCALADE EXPORT MODEL HAS A RFI FILTER ; A NON-EXPORT MODEL DOES NOT. EXPORT MODEL HAS A CODE OF 'GFV' TAGGED ON PUMP AND HAS A RFI FILTER.
The Quality factor of a narrowband filter is always?
You cannot fix a cap on the range of quality factors :)
What is the function of a choke in a variable speed drive?
It is used to reduce the hormonics in the system generated by Electronic components like VFDs etc. generaly we can consider input side as well as out side of the VFD. if u see the IEC1000-1/2/3 we have to consider 3% or 5% choke/filter at i/p and o/p of the vfds. if u have still more doubts contact :nsn.rajs@gmail.com
What kinds of frequencies can be blocked by using a band pass filter?
A band-pass filter blocks or attenuates frequencies outside of a certain range, while it accepts frequencies from within that range. The range of frequencies it will accept is determined by its Q-factor. A filter with a high Q-factor will have a narrow range of accepted frequencies, whereas a filter with a low Q-factor will have a wide range of accepted frequencies.
