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SEMI CONDUCTOR AND COMMUNICATION
SEMI CONDUCTOR AND COMMUNICATION

... Explain the terms Current Gain, Power Gain, and Trans Conductance of a Transistor in common emitter amplifier. 20. The above gate is known as XOR gate. Identify the gates P, Q and R from the above figure and write Truth Table. 21. Derive an expression for height of a T. V. tower for transmission of ...
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... If the voltage is above 200 the LED should be off If the LED is on, one or more of your resistances is incorrect or in the wrong place. Double-check the resistor placements and values found in Figure 1 and Table 1 respectively. If the voltage is below 200 the LED should be on If the LED is not on, ...
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... SBench 6 software which is used to control and process the acquired data. The input voltage is measured differentially with the two passive probes connected to channels Ch2 and Ch3. The channels are combined and show as channel Ch2 in the top center grid. The readout is scaled to reflect the attenua ...
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... The pressure of the water flowing through the pipes on the last slide compare to the voltage (electric potential) flowing through the wires of the circuit. The unit used to measure voltage is volts (V). The flow of charges in a circuit is called current. Current (I) is measured in Amperes (A). ...
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... 4. A transmission line of surge impedance 250 is connected to a cable of surge impedance 50 at the other end, if a surge of 400 kV travels along the line to the junction point, find the voltage build at the junction. 5. How can the tower footing resistance can be varied? 6. What are the advantage of ...


... controls the transistor current source. Adjust V2 until the current coming from the transistor is approximately 1 ma. This current is denoted as Ic. This current would remain constant for an ideal current source when V1 is varied. 6 - Record the transistor current for V1= 5, 15, and 25 V. Plot this ...
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... The moving coil indicators and a phase angle adjuster are used to monitor changing power factor conditions on ir-reversible balanced load systems. The power factor is indirectly determined by measuring the phase angle φ between current and voltage (both sinusoidal). However the indicators are calibr ...
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Tutorial #3 - UniMAP Portal

... Figure 1 shows closed loop connection between amplifier and feedback circuit/tank circuit. Colpitts and Hartley oscillators can be configured depending on the tank circuit used in circuitry shown in Figure 2. Answer the questions below based on Figure 1 and Figure 2. a) Derive a formula to calculat ...
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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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