Results 291 to 300 of about 200,732 (327)

Harmonic analysis of pulse-width modulated systems

Automatica, 2008
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Almér, Stefan, Jönsson, Ulf
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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 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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Impact of NBTI-Induced Pulse-Width Modulation on SET Pulse-Width Measurement

IEEE Transactions on Nuclear Science, 2013
This paper gives an explanation that SET pulse-width modulation in bulk CMOS devices happens due to negative bias temperature instability (NBTI). To investigate this, we propose and implement a stress adjustable pulse-width measurement circuit. Measurement results of test chips fabricated in a 65nm bulk CMOS process clearly show that pulse-width ...
Ryo Harada, Yukio Mitsuyama, Masanori Hashimoto, Takao Onoye   +3 more
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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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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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Pulse width modulation with frequency changing

2015 9th International Conference on Electrical and Electronics Engineering (ELECO), 2015
Pulse width modulation (PWM) is widely used in different applications. PWM transform the information in the amplitude of a bounded input signal into the pulse width output signal, without suffering from quantization noise. The frequency of the output signal is usually constant.
Milan Stork, Petr Weissar, Kamil Kosturik   +2 more
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Pulse-Width Modulation Regulators

2015
In the present chapter, the results of Chap. 10 are developed for power supply systems with \(PWM\) boost and buck- boost converters . Regime parameters of converter are determined relatively to the maximum permissible load voltage and the control pulse width. Regime change and correspondence between various regime parameters are examined as projective
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Pulse width modulated series compensator

IEE Proceedings - Generation, Transmission and Distribution, 2002
In recent years, several power electronics based technologies, such as the thyristor controlled series capacitor and the unified power flow controller, have been introduced to provide active control of power flow through transmission lines. They have been prompted by the need to utilise existing lines up to their thermal limits to feed power to an ...
G. Venkataramanan, B.K. Johnson
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Distortionless RF pulse width modulation

The 2002 45th Midwest Symposium on Circuits and Systems, 2002. MWSCAS-2002., 2003
A method is presented to synthesize a switching signal which linearly encodes a complex-modulated RF signal to an RF carrier frequency. The switching distortion associated with this method is limited to high-pass components out of band. Consequently, the switching signal may be filtered after high efficiency amplification to produce the linear RF ...
P. Wagh, P. Midya, P. Rakers
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