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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Basic Electronics Semiconductor —I • Materials that permit flow of electrons are called conductors (e.g.‚ gold‚ silver‚ copper‚ etc.). • Materials that block flow of electrons are called insulators (e.g.‚ rubber‚ glass‚ Teflon‚ mica‚ etc.). • Materials whose conductivity falls between those of conductors and insulators are called semiconductors. • Semiconductors are “part-time” conductors whose conductivity can be controlled. germanium Semiconductors silicon
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be connected together‚ usually by soldering to a printed circuit board‚ to create an electronic circuit with a particular function (for example an amplifier‚ radio receiver‚ or oscillator). Components may be packaged singly (resistor‚ capacitor‚ transistor‚ diode etc.) or in more or less complex groups as integrated circuits (operational amplifier‚ resistor array‚ logic gate etc.) Components Very often electronic components are mechanically stabilized‚ improved in insulation properties and protected
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INDEX |S.NO |TITLE |PAGE NO | |1 |Introduction |1 | |2 |Solar Energy |4 | |3 |Photovoltaics |24 | |4 |Solar Cell |28 | |5 |Solar Roadway |51 | |6 |Component description
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Determine VCB in the transistor circuit shown in Figure 1. The transistor is made of silicon and has =150. Assume VCE = 0.7 V. Figure 1 Ans: 2.85 V (4 marks) Determine the voltage gain‚ Av of the circuit shown in Figure 2. Assume = 200. Figure 2 Ans: Av = 291 (6 marks) For the common emitter amplifier circuit shown in Figure 3‚ (i) Draw the h parameter equivalent circuit. (ii) Derive the expression for voltage gain and input impedance in h parameters. (iii) If
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CHAPTER ONE 1.1 BACKGROUND TO THE STUDY Electronics has so much improved to the extent of applying its use to the health sector. In Africa there has been a very high infection rate of the malaria parasite due to the breeding environment conducive for its reproduction available in almost in all regions.About 3.3 billion people half of the world ’s population are at risk of malaria. In 2010‚ there were about 219 million malaria cases (with an uncertainty range of 154 million to 289 million)
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by G.E. ’s Frank W. "Bill" Gutzwiller (1). There are various types of thyristors; the type primarily depends on the number of layers and the particular connections to the layers. The word thyristor is a combination of the words “thyratron” and “transistor” (7). The word thyratron was originally a trademark registered by The General Electric Company (G.E.) and invented by G.E. scientist Albert W. Hull in 1929. The word‚ Thyratron is a combination of the Greek prefix thyr- and suffix -tron. The prefix
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HOUSE WIRING Wiring is not a duck soup. Period. If you are among those freebies‚ who want to do wiring just because their neighbors are doing it‚ you are on a wrong trail. Wiring is a very serious subject and it’s better to get some information about basicelectrical wiring before you step into it. Any gaffe can burn down your beautiful house in a few minutes. It is a common fact that people get confused when they are cabling for the first time. Gathering some information about circuits‚ wires and
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components. Some of these components are termed as active components because they take part in the transformation of the energy while other components‚ which only dissipate or store energy‚ are called as passive elements. The vacuum tubes‚ rectifier‚ transistors are some of-the common active while the resistances‚ which dissipate the power and energy storing elements such as capacitances and inductances are known as passive elements. The transformers may be regarded as a matching device. The success
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Solar seeker: In this project we design a solar seeker to follow a sun. solar seeker follow the sun and if the sensor attach on the sensor a sense a sun then solar seeker is stop automatically. Now after some time sun move from its position‚ then again seeker sensor sense the light and move the motor very slowly. If the sensor sense the signal then automatically stop the seeker . Movement of the seeker is restricted from left to right for limited area. To control the left and right limit
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