Sélectivité et anisotropie des Filtres Spatiaux :
... applied to a voltage source inverter operating as an active filter. This active filter compensates harmonic current and reactive power of nonlinear loads simultaneously. The proposed scheme uses a pulse width modulation (PWM) technique to generate the switching signals to the active filter, p-q theo ...
... applied to a voltage source inverter operating as an active filter. This active filter compensates harmonic current and reactive power of nonlinear loads simultaneously. The proposed scheme uses a pulse width modulation (PWM) technique to generate the switching signals to the active filter, p-q theo ...
Assiut university researches Ramptime Current
... currentcontrolled voltage source inverter (CC-VSI) with a filter inductance at the ac output and a dc-bus capacitor. The CCVSI is operated to directly control the ac source current to be sinusoidal and in phase with the ac source voltage. The inverter switching is controlled using ramptime current c ...
... currentcontrolled voltage source inverter (CC-VSI) with a filter inductance at the ac output and a dc-bus capacitor. The CCVSI is operated to directly control the ac source current to be sinusoidal and in phase with the ac source voltage. The inverter switching is controlled using ramptime current c ...
RF1238 - Wireless | Murata Manufacturing
... 1.2:1. The test fixture L and C are adjusted for minimum insertion loss at the filter center frequency, fc. Note that insertion loss, bandwidth, and passband shape are dependent on the impedance matching component values and quality. The frequency fc is defined as the midpoint between the 3dB freque ...
... 1.2:1. The test fixture L and C are adjusted for minimum insertion loss at the filter center frequency, fc. Note that insertion loss, bandwidth, and passband shape are dependent on the impedance matching component values and quality. The frequency fc is defined as the midpoint between the 3dB freque ...
Sélectivité et anisotropie des Filtres Spatiaux :
... reactive power of three-phase rectifier. A simple and fast prediction of the hysteresis band is added to a phase-locked-loop control, in order to ensure constant switching frequency and tight control of the position of modulation pulses. This allows high accuracy in tracking highly distorted current ...
... reactive power of three-phase rectifier. A simple and fast prediction of the hysteresis band is added to a phase-locked-loop control, in order to ensure constant switching frequency and tight control of the position of modulation pulses. This allows high accuracy in tracking highly distorted current ...
Is 24-bit better than 16-bit for Data Acquisition Applications
... The above plot shows a string of identical pulses digitized by a Gaussian‐response oscilloscope (blue reference) and a sigma‐delta ADC (red trace.) Note the sigma‐delta error is not only extreme, but also highly variable from cycle to cycle. Therefore there is no way of knowing how much error is ...
... The above plot shows a string of identical pulses digitized by a Gaussian‐response oscilloscope (blue reference) and a sigma‐delta ADC (red trace.) Note the sigma‐delta error is not only extreme, but also highly variable from cycle to cycle. Therefore there is no way of knowing how much error is ...
COURSE NUMBER: E E 352 Design of a Low
... This may be attributable in part to implementing resistor values slightly below the calculated resistances. In general for filters of this type, greater resistance translates to poles at lower frequencies. Moreover, the potentiometer inserted as a volume control placed limits on the gain achievable ...
... This may be attributable in part to implementing resistor values slightly below the calculated resistances. In general for filters of this type, greater resistance translates to poles at lower frequencies. Moreover, the potentiometer inserted as a volume control placed limits on the gain achievable ...
7.3 Functions of Several Variables Tools to learn
... For example: f (x, y) = x3 − 3y 2 is a function which gives an output for every pair of input values. f (0, 0) = 03 − 3(0)2 = 0, f (1, 2) = 13 − 3(2)2 = 1 − 3(4) = −11 f (−4, 3) = (−4)3 − 3(3)2 = 64 − 3(9) = 64 − 27 = 37. ...
... For example: f (x, y) = x3 − 3y 2 is a function which gives an output for every pair of input values. f (0, 0) = 03 − 3(0)2 = 0, f (1, 2) = 13 − 3(2)2 = 1 − 3(4) = −11 f (−4, 3) = (−4)3 − 3(3)2 = 64 − 3(9) = 64 − 27 = 37. ...
Filters
... • As the name would indicate, a band-pass filter (BPF) will allow signals of a desired frequency to ‘pass’ into the circuit, but at the same time it rejects all other unwanted frequencies. • The last lesson showed us that a series resonant circuit has a frequency response characteristic similar to t ...
... • As the name would indicate, a band-pass filter (BPF) will allow signals of a desired frequency to ‘pass’ into the circuit, but at the same time it rejects all other unwanted frequencies. • The last lesson showed us that a series resonant circuit has a frequency response characteristic similar to t ...
Ringing artifacts
In signal processing, particularly digital image processing, ringing artifacts are artifacts that appear as spurious signals near sharp transitions in a signal. Visually, they appear as bands or ""ghosts"" near edges; audibly, they appear as ""echos"" near transients, particularly sounds from percussion instruments; most noticeable are the pre-echos. The term ""ringing"" is because the output signal oscillates at a fading rate around a sharp transition in the input, similar to a bell after being struck. As with other artifacts, their minimization is a criterion in filter design.