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IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) ISSN: , PP: 56-59 www.iosrjournals.org
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) ISSN: , PP: 56-59 www.iosrjournals.org

... ABSTRACT: As the industry pushes for higher power levels and higher switching frequencies, power supplies which use MOSFETs for power conversion, are being designed to attain high efficiency, smaller size and eight. The subject of driving MOSFETs to their highest possible frequencies at the highest ...
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... turn-off time of Channel A of IC2. The ADCMP601’s data sheet shows a charge injection into the source electrode. In this case, however, charge injection to the drain electrode plays a role. As a rough estimate, you can use the data on charge injection in Reference 2. As the charge injection changes ...
USN 10EE15/25  B. E. Degree First Semester End Examination (SEE), December 2010
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... 1mωb. Calculate (i) self inductance (ii) emf induced (iii) energy stored when the current is reversed in 0.01 sec. ...
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Power electronics



Power electronics is the application of solid-state electronics to the control and conversion of electric power. It also refers to a subject of research in electronic and electrical engineering which deals with the design, control, computation and integration of nonlinear, time-varying energy-processing electronic systems with fast dynamics.The first high power electronic devices were mercury-arc valves. In modern systems the conversion is performed with semiconductor switching devices such as diodes, thyristors and transistors, pioneered by R. D. Middlebrook and others beginning in the 1950s. In contrast to electronic systems concerned with transmission and processing of signals and data, in power electronics substantial amounts of electrical energy are processed. An AC/DC converter (rectifier) is the most typical power electronics device found in many consumer electronic devices, e.g. television sets, personal computers, battery chargers, etc. The power range is typically from tens of watts to several hundred watts. In industry a common application is the variable speed drive (VSD) that is used to control an induction motor. The power range of VSDs start from a few hundred watts and end at tens of megawatts.The power conversion systems can be classified according to the type of the input and output power AC to DC (rectifier) DC to AC (inverter) DC to DC (DC-to-DC converter) AC to AC (AC-to-AC converter)
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