Results 161 to 170 of about 54,360 (207)

Spectrum of a frequency modulated pulse width modulation signal

International Journal of Circuit Theory and Applications, 2013
AbstractIn power electronics, the switching elements are controlled by pulse width modulated (PWM) signals making their currents on and off repeatedly. This might cause electromagnetic interference (EMI) problems especially in switched mode power supplies.
KILINÇ, SELÇUK, Cabuk, Gokhan
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Pulse-Width Modulated Rectifiers

2001
To obtain low ac line current THD, the passive techniques described in the previous chapter rely on low-frequency transformers and/or reactive elements. The large size and weight of these elements are objectionable in many applications. This chapter covers active techniques that employ converters having switching frequencies much greater than the ac ...
Robert W. Erickson, Dragan Maksimović
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MIDI Pulse Width Modulation Application

2011 International Conference on P2P, Parallel, Grid, Cloud and Internet Computing, 2011
Article describes simulation application for automatic managing lights devices on the stage. There are described all technologies and protocols necessary for application development. MIDI messages are input information and as an output serves Pulse width modulation. A managing tension is the result of Pulse width modulation.
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Pulse-Width Modulation

2012
Pulse-width modulation (PWM) is the foundation of control in power electronics. Its design affects almost all aspects of converter operation, from steady-state and dynamic control performance to electromagnetic interference (EMI) and thermal design. The basic principle of commonly used PWM methods has been well established and easy to understand.
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Three-Level Polynomial Pulse Width Modulation

IECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society, 2020
This paper presents a pulse width modulation variation in order to overcome any drawback in the sampled reference signal due to its discretization. This discretization can be a problem in low switching frequency power converters; for instance, in Medium Voltage applications. This effect is amplified with interleaved power converter structures.
Alain Sanchez-Ruiz, Eritz Aldazabal, Danel Madariaga, Eneko Olea, Pedro Izurza-Moreno, Markel Zubiaga, Joseba Arza   +6 more
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PULSE WIDTH MODULATION WITH HYBRID SAMPLING TECHNIQUES

IFAC Proceedings Volumes, 1983
Abstract The authors show how, by means of a simple circuit using particularities of sampling techniques, a low cost PWM polyphase generator has been developed. It is of particular interest that only standard digital and analog circuits are used, which all fit on a single eurocard. Further the authors describe the requirements for PWM generators and
P. Lataire, N. Venlet, B. Kaczmareck
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Pulse-Width Modulator Simulation

2022 12th International Conference on Advanced Computer Information Technologies (ACIT), 2022
Markiyan Nakonechnyi, Orest Ivakhiv, Yuriy Hirniak, Yuriy Nakonechnyi, Oleksandr Viter   +4 more
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Pulse width modulation

2006
Pulse width modulation is a form of pulse coding where the modulated signal contains a chosen frequency or band of frequencies as the main components plus harmonics of very high order that can be easily filtered. Even though PWM originated in telecommunication systems, it is now very common in power electronic circuits: dc to dc converters, dc to ac ...
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The frequency spectrum of pulse width modulated signals

Signal Processing, 2003
The determination of the frequency spectrum of a pulse width modulated (PWM) signal with general band-limited input x(t) has been an open problem for many years. We describe a new approach that gives exact analytical expressions for the spectra of uniform-sampling PWM signals and natural-sampling PWM signals with single-edge as well as with double-edge
Zukui Song, Dilip V. Sarwate
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Accelerometer with pulse width modulation

The Journal of the Acoustical Society of America, 1992
An accelerometer having a movable electrode which is moved according to acceleration with respect to a fixed electrode disposed in opposition to the movable electrode. An output device generates an output voltage which is proportional to the acceleration by measuring a gap between the movable electrode and the fixed electrode.
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