terminals the emitter potential at peak point is given (a) ( VBB (b)(VD (c) ( VBB + VD (d) (VD + VBB Fill in the blanks 11. The most efficient triggering signal for SCR is a __________________ 12. A 1-( half wave controlled rectifier has sin314t as the input voltage and R as load.For a firing angle of 300 for the thyristor‚the average output
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BASIC DIODE ELECTRONICS INTRODUCTION TO DIODES The p-n Junction The p-n junction is a homojunction between a p-type and an n-type semiconductor. It acts as a diode‚ which can serve in electronics as a rectifier‚ logic gate‚ voltage regulator (Zener diode)‚ switching or tuner (varactor diode); and in optoelectronics as a light-emitting diode (LED)‚ laser diode‚ photodetector‚ or solar cell. In a relatively simplified view of semiconductor materials‚ we can envision a semiconductor as having two
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packages. BC548 This device is designed for use as general purpose amplifiers and switches requiring collector currents to 300 mA. DIMMING CIRCUIT Q4010LT TRIAC 10 A 400 V Isolated Bidirectional TRIAC - TO-220 DIODE 1N4006 This standard rectifier is designed for general purpose‚ low power applications. TECHNICAL REQUIREMENTS Block Diagram Description Illumination Control System with SMS Technology will be conducted to determine the factors to be considered in automating our lights using
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generates the rectifier output voltage needed to obtain the desired armature current and thus the desired electromagnetic torque. This report also includes the work already completed and work planned for the next semester. Figure1: Proportional Integral control (PI) INTRODUCTION Figure 2: main idea of PI controller The control schematic of PI control dc motor converter-controlled separately-excited dc motor drive is shown above. The motor drive shown is a speed-controlled system. The thyristor
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overloading. Firstly the power supply is built‚ a 240v-15v AC transformer is used‚ the 15v section of the transformer is solder to the vero board and a bridge rectifier is fixed to the wires on the board‚ the filtering capacitor (1000uf) is connected to DC output of the rectifier‚ then a voltage regulator (LM7812) is connected to the output of the rectifier‚ this steps completes the power supply so the parallel port cable is soldered to the board and the opto-isolator are placed carefully on the board and
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CHAPTER I INTRODUCTION Most mains-operated equipment in use today is connected to the supply via plugs and sockets. These are generally acceptable in benign environments‚ but can be unsafe or have limited life in the presence of moisture. In explosive atmospheres and in undersea applications‚ special connectors must be used. This paper describes a technique‚ the contactless energy transfer system (CETS)‚ by which electrical energy may be transmitted‚ without electrical connection or physical
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the object using the IR signal‚ bomb is detected using metal detector‚ track open is sensed using limit sense. All the information is transmitted using the RF signal to the train. After receiving the signal train is moved accordingly. Trolley is controlled from the train only. Here both the train and trolley is having the Tx and Rx. They are used to communicate between both. BLOCK DIAGRAM: Trolley Side: COMPARATOR OBJECT SENSOR LIMIT SENSOR ENCODER
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DECLARATION We hereby declare that the project entitled “CELL PHONE BASED DEVICE CONTROL” submitted for the B.Tech Degree is our original work and the project has not formed the basis for the award of any degree‚ associateship‚ fellowship or any other similar titles. Signature of the Students: Place: Date: i ISO 9001:2000 CERTIFIED INSTITUTE Gandhi Institute of Engineering & Technology GUNUPUR – 765 022‚ Dist: Rayagada (Odisha)‚ India (Approved by AICTE‚ Govt. of Orissa
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INTRODUCTION Wouldn’t it be nice to have your home take care of your thing for you‚ automatically‚ without you having to lift a finger? You bet it would. This is the promise of Home Automation. There are many different systems‚ especially in larger homes‚ that can benefit from being integrated. Some of these systems include security alarm‚ HVAC‚ audio/video & lighting. Home automation integrates together‚ enabling them to function more efficiently‚ improve functionality‚ conserve resources & enhance
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Electric Drives‚ Basic Elements Of An Electric Drive‚ Dynamic Conditions Of A Drive System‚ Stabili1y Considerations Of Electrical Drives 3. CONVERTERS FOR FEEDING ELECTRIC MOTORS A General Survey Of Converters For Feeding Electric Motors‚ Phase Controlled Line Commutated Converters 4. CONTROL OF ELECTRIC MOTOR Induction motor drives‚ synchronous motor drives‚ dc drives. 5. CONTROL TECHNIQUES Introduction‚ block diagram representation of drive systems‚ signal flow graph representation of the
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