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ece209lab2

# ece209lab2 - LAB 2 Meter Measurements and Errors Students...

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LAB 2 Meter Measurements and Errors Students Name: Adit Joshi Nick Novello Date : 04/13/10 Course Name : ECE 209 TA Name : Bo Ji

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Introduction: This lab is an introduction to meters and internal impedances. It helps us understand how internal impedances cause disturbances in circuits that are being measured and the resulting measurement errors. The main objectives were: Measure the internal resistance of a voltmeter Measure the internal resistance of a ammeter Observe the frequency response of AC Voltmeters. Procedure: Refer to pages 24-26 of ECE 209 Course Packet
Data: 1) Table for measuring internal resistance of a voltmeter. Vs Voltmeter Range Measured R1 Measured R2 Measured Vm Calculated Rv Given Rv % error Rv 4V 5V 0.9835MΩ 0.9778MΩ 1.9375V 16.6 MΩ 10MΩ 66% 20V 50V 0.9835MΩ 0.9778MΩ 9.6500V 14.7 MΩ 11MΩ 33% 2) Data for measuring internal resistance of an ammeter. Current (I) passing through ammeter = 0.0807mA Estimation of internal resistance (Ra) of ammeter = 23.17 Ω

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Analysis:
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ece209lab2 - LAB 2 Meter Measurements and Errors Students...

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