` PORTABLE MOBILE CHARGER USING PIEZOELECTRIC ENERGY DEEPAK SAHADEVAN NAIR PRADEEP KARUNAMBARAN SUBMITTED ON: 07/JUNE/2013 CIRCUIT DESIGN PROJECT REPORT 7514ENG PRACTICAL ELECTRONICS Griffith University‚ Brisbane‚ Qld‚ Australia EXECUTIVE SUMMARY Alternative energy sources are one of the main focuses in research and development in many aspects in engineering‚ especially electronic devices. By targeting renewable energy sources‚ not only will the amount of pollution decrease but also
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(IR) beam is transmitted through IR LED1. The receiver circuit is shown in Fig. 2. It comprises IR sensor TSOP1738 (IR RX1)‚ npn transistor BC548 (T1)‚ timer NE555 (IC2) and some resistors and capacitors. IC2 is wired as a monostable multivibrator with a time period of around 30 seconds. The melody generator section is built around melody generator IC UM66 (IC3)‚ transistor T2 and loudspeaker LS1. Fig. 3 shows pin configurations of IR sensor TSOP1738 and melody generator IC UM66. The power supply for
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Automatic Street Light Control INTRODUCTION TO EMBEDDED SYSTEMS An embedded system can be defined as a computing device that does a specific focused job. Appliances such as the air-conditioner‚ VCD player‚ DVD player‚ printer‚ fax machine‚ mobile phone etc. are examples of embedded systems. Each of these appliances will have a processor and special hardware to meet the specific requirement of the application along with the embedded software that is executed
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Anna Holster Introduction to the Sciences Wentzel Briar CTU Virtual Login Individual Project 1 01/14/13 The statement that; “Computers are part of our everyday lives.” Is so correct‚ I don’t think the people of today would know how to do anything without the computer. Between the desktop top computers and laptops to the smart phone everything can be stored using less space and the ability to locate stuff so much more easier that if the world of today lost computers around the world for even
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CHAPTER 1 : INTRODUCTION 1.1 Introduction Recently‚ we often hear cases of theft manhole made of steel. These thefts often occur because the steel is very valuable when sold. One of my neighbors asked if there are tools that can prevent theft drains. From there I got the idea to create an alarm that can prevent theft from stealing the drain cover becoming increasingly. We begin by examining the case drain theft either inside or outside the country. Too many cases that have occurred that resulted
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trimming & grinding Ingot slicing Wafer polishing & etching Wafer cleaning. 6. Different types of oxidation? Dry & Wet Oxidation 7. What is the transistors CMOS technology provides? N-type transistors & p-type transistors. Drain ‚ Source & Gate 9. What is Enhancement mode transistor? pa ul .c om 8. What are the different layers in MOS transistors? The device that is normally cut-off with zero gate bias. 10. What is Depletion mode Device? The Device that conduct with zero gate bias. 11. When
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ELECTROTECH99 30.10.11 21:49 BTS Electrotechnique ANGLAIS Session 1999 WHAT IS A SCHOTTKY DIODE? The Schottky diode is an important device which is widely used in radio-frequency (RF) applications. It possesses many similarities to the point-contact diode. In fact many of the early devices were made in the same way as a point-contact diode‚ although today’s devices are made with totally different manufacturing techniques. Unlike conventional semiconductor diodes‚ which consist of
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Master Thesis ICT Time to Digital Converter used in ALL digital PLL Master of Science Thesis In System-on-Chip Design By Chen Yao Stockholm‚ 08‚ 2011 Supervisor: Dr. Fredrik Jonsson and Dr. Jian Chen Examiner: Prof. Li-Rong Zheng Master Thesis TRITA-ICT-EX-2011:212 1 ACKNOWLEDGEMENTS I would like to thank: Professor Li-Rong Zheng for giving me the opportunity to do my master thesis project in IPACK group at KTH. Dr. Fredrik Jonsson for providing me with the interesting topic and
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Computer System Introduction & Definitions — Computer is an electronic device that is used to solve various problems according to a set of instructions given to it — A computer is a programmable machine that receives input‚ stores and manipulates data‚ and provides output in a useful format Brief History of Computer — The first use of the word "computer" was recorded in 1613‚ referring to a person who carried out calculations‚ or computations‚ and word continued to be used in
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Chapter 1 1. An ideal voltage source has 5. A real current source has a. Zero internal resistance b. Infinite internal resistance c. A load-dependent voltage d. A load-dependent current a. Zero internal resistance b. Infinite internal resistance c. A small internal resistance d. A large internal resistance 2. A real voltage source has 6. If a load resistance is 1 kohm‚ a stiff current source has a resistance of a. Zero internal resistance b. Infinite internal resistance c. A small internal
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