Module 1 Power Semiconductor Devices Version 2 EE IIT‚ Kharagpur 1 Lesson 7 Insulated Gate Bipolar Transistor (IGBT) Version 2 EE IIT‚ Kharagpur 2 Constructional features‚ operating principle and characteristics of Insulated Gate Bipolar Transistors (IGBT) 7.1 Introduction The introduction of Power MOSFET was originally regarded as a major threat to the power bipolar transistor. However‚ initial claims of infinite current gain for the power MOSFETs were diluted by the need to design
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Multicultural Concerns The purpose of family therapy is to equip families with the tools needed to overcome difficulties with interpersonal relationships. The many issues the African-American culture face are more unstable and aggressive than those of other cultures. Therefore‚ without acquiring the skills needed; for instance‚ effective communication skills and problem-solving techniques‚ most African-American relationships normally end in divorce. According to a recent article published by
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The cost benefit analysis of Plug In hybrid electric vehicles includes a comparison between the lifetime of the vehicle and the ownership cost. Here the cost of ownership includes the cost of consumption of energy as well as the retail cost‚ but excludes the differences in cost of maintenance. A high cost of 5 USD per gallon of gasoline is assumed for the near term scenario. The cost of consumption of electricity is assumed to be 0.09 USD per Kilowatt-hour.[29] 7. GOVERNMENT INCENTIVES Since reduction
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In the article “The Power Ballad and the Power of Sentimentality‚” Metzer discusses how the power ballad‚ sentimentality‚ and uplift are connected. A ballad‚ as stated in the article‚ is a type of song that narrates a story in short stanzas but also has musical characteristics within it. What separates a ballad from a power ballad is emotional intensity. Ballads conjure up emotions in people‚ but power ballads conjure up more profound emotions. Metzer’s article clarifies the differences between ballads
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Master Thesis Report June 2013 Hybrid (Solar PV-Diesel) Mini Grids in Philippines Prepared for GIZ Germany Prepared By Varun Gaur Masters Student (2011-2013) Post Graduate Program in Renewable Energy (PPRE) University of Oldenburg‚ Germany Email: varungaur.engg@gmail.com Varun Gaur‚ PPRE‚ University of Oldenburg Page 1 Varun Gaur‚ PPRE‚ University of Oldenburg Page 2 Acknowledgement Foremost‚ I would like to express my sincere gratitude to my supervisors Dr
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His ideas‚ though‚ were greatly influenced by Freud‚ going along with Freud’s ideas about the structure and topography of personality. However‚ whereas Freud was an id psychologist‚ Erikson was an ego psychologist. He emphasized the role of culture and society and the conflicts that can take place within the ego itself‚ whereas Freud emphasized the conflict between the id and the superego. According to Erikson‚ the ego develops as it successfully resolves crises that are distinctly social
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[pic] Which Customers Are Worth Keeping and Which Ones Aren’t? Managerial Uses of CLV Roy Cardiff runs a mail-order business that tracks sales to each customer. He recently decided to cut costs by curtailing catalogs to those customers who are least likely to buy from him in the future. His customers break down into three categories: those who made several small purchases throughout the past year; those who made a single purchase but for a much larger amount‚ and those who have had a long but
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LANGUAGE AND CULTURE SESSION TEN LANGUAGE AND POWER (2): POWER BEHIND DISCOURSE Main points in this session: 1. Power behind discourse: Standard language 2. Power behind discourse: discourse types as ‘effects of power’ 3. Power and access to discourse The idea of ‘power behind discourse’ is that the whole social order of discourse is put together and held together as a hidden effect of power. Fairclough (1989) = three aspects of ‘power behind discourse’‚ i.e. of hidden effects of power: 1
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Thoughts about future power generation systems and the role of exergy analysis in their development Noam Lior * Department of Mechanical Engineering and Applied Mechanics‚ University of Pennsylvania‚ 297 Towne Building‚ 220 South 33rd Street‚ Philadelphia‚ PA 19104-6315‚ USA Abstract In face of the likely doubling of the world population and perhaps tripling of the power demand over the next 50 years‚ this paper (1) presents some thoughts on the possible ways to meet the power demands under the
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How does the concept of civic culture’ differ from that of political culture’? To what extent can the latter explain why the politics of countries differ? "When we speak of the political culture‚ we refer to the political system as internalized in cognitions‚ feelings‚ and evaluations of its population." Almond and Verba In their classic 1963 study‚ Civic Culture‚ political culture was defined within very narrow parameters‚ concerning only political’ attitudes. This neglected the existence
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