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ECE 331 – Digital System Design
ECE 331 – Digital System Design

... The slides included herein were taken from the materials accompanying Fundamentals of Logic Design, 6th Edition, by Roth and Kinney, and were used with permission from Cengage Learning. ...
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... to rest with one hole under the edge of a pole of the shunt magnet, the rotation being thus eliminated to a maximum of half a revolution. 19.A load draws 10A current from 230V AC mains at 0.75 power factor for half an hour what is the energy consumed? Energy consumed = power×time = VIcosφ×t =230 × 1 ...
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Exam 3--PHYS 102--S14
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AESO System Operating Limits Methodology for the Planning Horizon (R1 FAC-010-AB-2.1)
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Structural analysis of electrical circuits including magnetoquasistatic
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... subcircuits. That is, these devices are modeled via equivalent circuits containing only basic elements. Most often, the set-up of equations uses modified nodal analysis (MNA), which we also employ. Today, chip technology develops rapidly and the complexity of the above mentioned devices grows fast ...
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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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