slides-02 - MEASUREMENT SYSTEMS AND THEIR PRINCPLES 1 Ideal...

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1 MEASUREMENT SYSTEMS AND THEIR PRINCPLES
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2 Ideal current source: A souce that has infinite output resistance and supply infinite current. A real current source with output impedance
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3 Ideal voltage source: A souce that has zero output impedance and supply infinite current. A real voltage source with output impedance
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4 Ideal ammeter: A meter that has zero input resistance and has no voltage drop accross it. A real ammeter with input impedance
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5 Ideal Voltmeter: A meter that has infinite input resistance and draws no current. A real voltmeter with input impedance
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6 Measuring with ideal instruments 2 1 2 1 2 1 // R R R R R R R eq + = = s m V V = No measurement error
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7 Effect of source and meter impedances s eq out eq m V R Z R V ' ' = = = k R R 1 2 1 = M 1 in Z = 50 out Z s m V V 09 . 9 = measurement error= 9.1%
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8 Keithley Model 2400-C General-Purpose SourceMeter ( 200V and 1A, 20W) GPIB interface Boards Front view Rear view Signal Generators
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9 Keithley Model 2010 7-1/2-Digit, Low-Noise, Autoranging DMM Digital Multimeters Digital Portable Multimeter
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10 Oscilloscopes Analog Oscilloscope Portable Digital Oscilloscope
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11 s oc V R R R V 2 1 2 + = 2 1 2 1 R R R R R TH + = Thevenin and Norton Equivalent
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This note was uploaded on 09/21/2011 for the course EE ee taught by Professor Ee during the Spring '10 term at Istanbul Technical University.

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slides-02 - MEASUREMENT SYSTEMS AND THEIR PRINCPLES 1 Ideal...

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