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List of Project Proposals: MSc (Power Engineering)
List of Project Proposals: MSc (Power Engineering)

... Title Optimal Fuel Cell Power Extraction Renewable energy sources are now finding importance because of high energy cost and of environmental concerns. Fuel cells have found special applications in hybrid electric vehicles. Among different varieties, the proton exchange membrane (PEM) type of fuel c ...
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October 1st Circuits - Chapter 28

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Tektronix MBD: Products > Current Measurement Systems AM5030

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13311: Auxiliary Control Status (AUXCS) Service Guide

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NTPC summer training report

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Figure Time-space-time switch Packet switch

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... inductor winding but also break through the switches. The operating modes described for the positive half-cycle are equally applicable for the negative half-cycle, which starts right after Q 5 is turned off. It should be noted that although the duration between t5 and t6 can be made longer to lessen ...
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Methods of Magnetizing Permanent Magnets

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... then be met. This is automatically the case if the device does not stretch the LOW period of the SCL signal. If such a device does stretch the LOW period of the SCL signal, it must output the next data bit to the SDA line tr max + tSU:DAT = 1000 + 250 = 1250ns (according to the standard-mode I2C-bus ...
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HMC544 数据资料DataSheet下载

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Switched-mode power supply



A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.
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