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SPEED CONTROL OF DC SHUNT MOTOR USING MICRO CONTROL BASE


INTRODUCTION:-
DC motor speed controllers are very useful for controlling the motion of robotic and industrial automation systems. The controller presented here uses the PWM technique. The PMW wave for speed control is generated using Atmel AT89C51 microcontroller. To control the speed of the DC motor, you need a variable power supply. When the DC motor is switched on, it take the certain time to reach the full speed. As ....etc

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i need ppt for speed and current control of bldc motor using sliding mode ....etc

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Insulated gate bipolar transistor



Equivalent circuit for IGBT

The insulated gate bipolar transistor or IGBT is a three-terminal power semiconductor device primarily used as an electronic switch and in newer devices is noted for combining high efficiency and fast switching. It switches electric power in many modern appliances: electric cars, trains, variable speed refrigerators, air-conditioners and even stereo systems with switching amplifiers. Since it is designed to turn on an ....etc

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can i get the mat-lab program for speed control of single phase induction motor using vector control method. ....etc

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how does bipolar disorder affect the routine life of a person

Effects of bipolar disorder can be far-reaching, both into the lives of patients and those around them. Bipolar disorder affects work, school, relationships, physical health and many other aspects of everyday life. In fact, in the early 1990s, it was calculated that the loss of productivity due to bipolar disorder cost $15.5 billion annually.1

The most severe effect of bipolar disorder is suicide. Unfortunately, 25% - 50% of people with bipolar disorder attempt suicide and 11% comm ....etc

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Tri-gate transistors and methods to fabricate same
This invention provide a method for effecting uniform silicon body height for silicon-on-insulator transistor fabrication.In a form of the method, a sacrificial oxide layer is disposed upon a semiconductor substrate. The oxide layer is etched to form a trench. which is then filled with a semiconductor material. This deposited semiconductor material is then planarized with the remainder of the oxide layer and the remainder of the oxide layer is then removed.

Description
As t ....etc

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INTRODUCTION
This assignment is basically designed to demonstrate the use of controllers in DC motor which consists of two stage ,electronic stage that is controlled by 8 bit microcontroller and second is the mechanical stage consisting of gear box which controls the motion of DC motor to provide a impulse to electronic stage which generates a resultant signal to control the parameters of controller.
FEEDBACK-CONTROL THEORY
Figure 1 shows the block diagram of a closed-loop system. In this configuration a ....etc

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