semiconductors devices demands a greater purity than an afforded by some metallurgical grades of silicon. Silicon wafers used as substrates in the manufacture of discrete electronic devices that include transistors‚ and also in the development of integrated circuits that are found in computer chips. The reason for silicon is that silicon has a wonderful property of forming a high quality oxide when exposed to oxygen at high temperatures. This oxide forms insulating films and allows many devices to be built
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GATE Books for Electronics & Communication Engineering SUBJECT 1. (1) (2) Microelectronic Circuits (3) Electronic Devices and Circuits (4) OP Amp and linear Integrated Circuit (5) Solid State electronic devices (6) 2. (i) (ii) (iii) (iv) (v) 3. 4. 5. 6. 7. (i) (ii) (iii) 8. (i) (ii) (iii) (iv) 9. (i) (ii) (iii) Semiconductor devices Communication System Communication System An introduction to Analog and Digital Communication Communication System : Analog and Digital Modern Digital and Analog Communication
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RAJASTHAN RAJYA VIDYUT PRASARAN NIGAM LTD. (Regd. Office: Vidyut Bhavan‚ Janpath‚ Jyoti Nagar‚ Jaipur–302005) CONSTRUCTION MANUAL FOR SUB STATIONS Last Updated : 31-1-2008 FOREWORD The Engineers experienced in the field of Transmission have made this effort to compile the experience gained over the past 40 years in the form of a Manual and make it available to the Engineers and Technical Supervisors of the Company. This is a step forward to disseminate knowledge so that uniform practices
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life. Extensive in-plant preassembly and testing of large units and complete bays reduces assembly and commissioning time on the construction site. GIS equipment is usually of modular construction. All components such as bus bars‚ disconnectors‚ circuit-breakers‚ instrument transformers‚ cable terminations and joints are contained in earthed enclosures filled with sulphur hexafluoride gas (SF₆). Fig. 1 gas insulated substation Fig. parts of substation 2 -WHY DO WE NEED GIS (Gas
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or packets based on the destination address in each packet. When they are received the packets are reassembled in sequence to make up the message. Circuit switched networks rely on dedicated point-to-point connections during transmission. There are many differences between the two whereas they usually end up on separate sides of a corporation. Circuit switched networks were traditionally used for phone calls and packet switched networks handled all the data. With the long distant reach of phone calls
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Classical computing has been operating using a binary system measured in bits. These bits can have only two states‚ zero and one. These states are used to represent‚ store and process data. The binary architecture has been used in computers since Konrad Zues built the first programmable computer in 1941(CITATION). As computers have become more advanced so has the complexity and magnitude of the problems that they can solve. With the current rate of advancement defined by Moore’s law transistors
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Lab 10 Low Pass and High Pass Filters Objective To study the behavior of RC and RL circuits when they are connected to AC power supply. Material Function generator‚ resistor‚ capacitor‚ inductor‚ wires‚ breadboard‚ oscilloscope Procedure RC Low Pass Filter We use a 10KΩ resistor and a 0.01μF capacitor in a series and prepare a function generator and a oscilloscope. Next‚ we measure the each voltage by changing the frequency (Start from 10‚ 20‚30‚50‚70Hz). The measurement repeats
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Resistor‚ Capacitor and Inductor make up some of the basic elements in any circuit system. Memristor or a memory resistor is described as a resistor which can store data. This characteristic of the memristor is the reason it is most sought after for use in memory related systems. [6] The concept of memristors was first theorized by Prof. Leon. O. Chua in 1971. It wasn’t until Stanley Williams invented the crossbar latch in 2008 that the scientists realized the memristor could be made possible. It
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series with the armature circuit. This resistance is gradually reduced as the motor gains speed (and hence Eb increases) and eventually it is cut out completely when the motor has attained full speed. The value of starting resistance is generally such that starting current is limited to 1.25 to 2 times the full-load current. 5.8 Types of D.C. Motor Starters The stalling operation of a d.c. motor consists in the insertion of external resistance into the armature circuit to limit the starting current
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assignment relates to: P6 Describe how electricity can be produced P7 Describe how electrical energy is transferred to the home or Industry P8 Describe the use of measuring instruments to check values predicted by Ohm’s law in given electrical circuits M4 Compare the efficiency of electricity generated from different sources D4 Assess how to minimise energy losses when transmitting electricity and when converting it into other forms for consumer applications Interim Feedback
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