an O-scope) is a type of electronic test instrument that allows observation of constantly varying signal voltages‚ usually as a two-dimensional graph of one or more electrical potential differences using the vertical or ’Y’ axis‚ plotted as a function of time‚ (horizontal or ’x’ axis). Although an oscilloscope displays voltage on its vertical axis‚ any other quantity that can be converted to a voltage can be displayed as well. In most instances‚ oscilloscopes show events that repeat with either no change
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| A laser communication system for voice transmission | | | 4/18/2011 | EE1003 report Semester 2‚ 2010/2011 | Group: 5HUANG YONGCHANG A0073181L KHO ENG KIEN A0072980Y HAR KAH HAUR A0072293EDANIEL TAN HOONG XIANG A0074608B | HENG JEYEE A0074494WCHENG SHAU CHUAN A0074530M DINH QUOC CUONG A0074480ECHOU YANG A0072474A | A laser communication system for voice transmission EE1003 report for group 5 1. Scope 1.1 Background Information flow has become increasingly rapid with
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Hybrid Electric Cars‚ Combustion Engine driven cars and their Impact on Environment. Z. Čeřovský*‚ P. Mindl* * Czech Technical University in Prague‚ Praha 6‚ Technická 2‚ Czech Republic Estimated vehicle number on the Earth 3 Total vehicle number in Milliards Abstract--Paper stresses the negative influence of cars on the environment. Hybrid cars technology can diminish the fuel consumption and green house gases production. Different types of electric hybrid powertrains are described
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The Software is the Instrument NATIONAL INSTRUMENTS Application Note 065 ® ® Measuring Temperature withThermistors – a Tutorial David Potter Introduction Thermistors are thermally sensitive resistors used in a variety of applications‚ including temperature measurement. This application note discusses this application of thermistors‚ including basic theory and how to interface thermistors to modern data acquisition systems. Thermistor Overview A thermistor is a piece of semiconductor
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on software. Between the upper and lower layers resides layer 4‚ which acts as a divider. The physical layer concentrates on the transmission of data on the network. One of its fundamentals is how bits are represented on the medium. Binary expression is a stream of 1s and 0s that represent data on a computer network. These streams of 1s and 0s can also be represented through the copper wiring in electrical voltage or the light that is carried through fiber-optic cabling. There are two types of
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org/wiki/Operational_amplifier Operational amplifier From Wikipedia‚ the free encyclopedia An operational amplifier ("op-amp") is a DC-coupled high-gain electronic voltage amplifier with a differential input and‚ usually‚ a single-ended output.[1] An op-amp produces an output voltage that is typically hundreds of thousands of times larger than the voltage difference between its input terminals.[2] Operational amplifiers had their origins in analog computers where they were used to do mathematical operations
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Two transistors cross connected as a bistable multivibrator change state at each signal. One of these transistors drives a heavier transistor which controls a lamp. I built my prototype on a cardboard cover from an old notebook. Punched holes using dividers and placed the components down flat. It might look neater if you draw the circuit diagram on to the board before you begin. A photo is included below. The components are from my junk box and I found that it works even if you omit that 4.7 Megohm
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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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Contents 1 BASIC CONCEPTS OF ELECTRICITY 1.1 Static electricity . . . . . . . . . . . . . . 1.2 Conductors‚ insulators‚ and electron flow 1.3 Electric circuits . . . . . . . . . . . . . . . 1.4 Voltage and current . . . . . . . . . . . . 1.5 Resistance . . . . . . . . . . . . . . . . . . 1.6 Voltage and current in a
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importance wherever voltage is to be measured. A voltmeter is an instrument used for measuring the electrical potential difference between two points in an electric circuit. Analog voltmeters move a pointer across a scale in proportion to the voltage of the circuit. General purpose analog voltmeters may have an accuracy of a few per cent of full scale‚ and are used with voltages from a fraction of a volt to several thousand volts. Digital voltmeters give a numerical display of voltage by use of analog
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