Single Patch Microstrip Antenna Based on Koch and Sierpinski Fractal-shapes. Progress In Electromagnetics Research Letters.17‚ 95-103. Chiam‚ T. M.‚ L. C. Ong‚ Karim‚ M. F. and Guo‚ Y. X. (2009). 5.8GHz Circularly Polarized Rectennas Using Schottky Diode and LTC 5535 Rectifier for RF Energy Harvesting. Proc. of Asia Pacific Microwave Conference 2009. IEEE 66 The size of the rectenna is considered quite large. Surprisingly‚ the circuits are nice and well etched as fractals have complex designs. I am
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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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Diagram and its Description 2.1.1 Transformer 2.1.2 Rectifier 2.1.3 Smoothing 2.1.4 Regulator Component List Schematic of Variable Power Supply Working of the Circuit 2 2 2 2 3 3 4 5 2.2 2.3 2.4 3-HARDWARE PORTRAYAL 3.1 3.2 3.3 Transformer Diode Capacitor 3.3.1 Electrolyte Capacitor 3.3.2 Unpolarised Capacitor 3.3.3 Capacitor Colour Code Resistor 3.4.1
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EXPERIMENT NO-1 AIM- To determine the frequency of A. C. mains by using an electric vibrator. APPARATUS- Electric vibrator‚ table lamp‚ pulley‚ weight box‚ fishing cord‚ a. c. source. THEORY- when a cord of mass per unit length m is connected to the vibrating rod of the vibrator and stretched with a tension T‚ the cord vibrators in segments. If the length of the cord is then adjusted until the nodes are clearly marked‚ the frequency of the stretched string is the same as of the vibrating rod which
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Lovely Professional University‚Punjab Format For Instruction Plan [for Courses with Lectures and Tutorials Course No ece201 Cours Title ELECTRONIC DEVICES AND CIRCUITS Course Planner ECE201 ELECTRONIC DEVICES AND CIRCUITS 15330 :: Ishan Luthra Text Book: Other Specific Book: Lectures Tutorial Practical Credits 3 1 0 1 JACOB MILLMAN & HALKIAS‚ INTEGRATED ELECTRONICS: ANALOG & DIGITAL CIRCUIT SYSTEMS‚ Mc GRAW HILL‚ 1991 EDITION‚ 41 PRINT‚ 2005. 2 1. ROBERT
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11/24/2013 CLASSIFICATIONS of MATERIALS Semiconductor Theory a. Conductor b. Semiconductor c. Insulator • Number of valence electrons is 1-3 with very high conductivity • Number of valence electrons is 4 with intermediate conductivity • Number of valence electrons is 5-8 with very low conductivity Semiconductor Conductors • Has more electrons that are free to move • Supports charge carriers to flow • Support flow of electricity • Has very low resistance allowing
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PART I CHAPTER III DIODES APPLICATIONS –SPECIAL PURPOSE DIODES OBJECTIVES 3.1 I-V- characteristics of normal and zener diode and measurement of static and dynamic resistance 3.2 I-V characteristics on CRO 3.3 Clipping circuits using diodes 3.4 Clamping circuits using diodes 3.5 Diode as a voltage multiplier 3.6 Diode used as a meter over current protection INTRODUCTION SEMICONDUCTORS Semiconductors are materials which are used to manufacture all electronic and optoelectronic devices
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It’s nothing but a AC to DC converter. Keywords: 5V DC power supply‚ rectifier‚ diode‚ filter‚ capacitor‚ zener diode‚ voltage regulator‚ signal‚ waveshape. 1. Introduction I’m designing a 5V DC power supply. Here I’m basically designing a AC to DC converter. To convert the AC to DC‚ I’m using components like full wave bridge rectifier‚ filter & a voltage regulator. To get the constant 5V I use 1N4733A zener diode. The block diagram of this project is given below and giving the part to part
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Semiconductor The diode – A diode is an electronic component which allows electric current to glow in only one direction. Diodes are constructed from semiconductors. The anode is the positive terminal and the cathode the negative terminal. LED= light emitting diode a diode which emits light. Semiconductor materials Silicon is the most commonly used semiconductor in electronics‚ germanium is also used. These elements form a stable crystal lattice‚ with each atom sharing its four outer electrons
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CONTENTS 1. INTRODUCTION 2. DESIGN PRINCIPLE 3. CIRCUIT DESCRIPTION a. Power supply b. Under voltage/over voltage detector c. NOR Gate (OR and NOT gate) d. Bi-stable / Latch e. Relay driver f. Buzzer Driver 4. FUTURE EXPANSION 5. CONCLUSION INTRODUCTION The protection system is one o the important aspect on which major manufacturers is concentrating. The companies like L&T‚ SIMENS etc. The protection system not only provides durability
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