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Single Phase Induction Motors
Single Phase Induction Motors

... The single phase induction motors are classified based on the method of starting method and in fact are known by the same name descriptive of the method. Appropriate selection of these motors depends upon the starting and running torque requirements of the load, the duty cycle and limitations on sta ...
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... Low-pass filters can be cascaded to obtain a greater roll-off rate. For example, a two-chains filter followed by another two-chains filter will produce a roll-off rate of 80 dB/decade. Active High-Pass Filters A high-pass active filter follows the same theory as a low-pass filter. The positions of t ...
IOSR Journal of VLSI and Signal Processing (IOSR-JVSP)
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... [min [xi], yo] where min [xi] is the earliest arrival time among all inputs and yo is the latest time of output availability. During each clock cycle the logic gate is active only within this time (TTS) during which all switching operations take place while for rest of the clock period it remains in ...
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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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