force sensor is used in an electronic scale to weigh items ranging from 1 gf (gram force) to 1000 gf. The sensor's resistance changes linearly from 1M ohms to 1K ohms as the force changes from 1 gf to 1000 gf (9.80665mN to 9.8665N). To measure the resistance, the sensor is connected to a constant current source of 10 micro A and the voltage across the sensor is measured by a voltmeter with internal impedance of 10 M ohms. Refer to figure 1. 1. Calculate the error produced by the connection of the voltmeter. 2. Determine the actual readings for the range of forces given. By simple proportion actual range readings are 0.909 g to 999 g
force sensor is used in an electronic scale to weigh items ranging from 1 gf (gram force) to 1000 gf. The sensor's resistance changes linearly from 1M ohms to 1K ohms as the force changes from 1 gf to 1000 gf (9.80665mN to 9.8665N). To measure the resistance, the sensor is connected to a constant current source of 10 micro A and the voltage across the sensor is measured by a voltmeter with internal impedance of 10 M ohms. Refer to figure 1. 1. Calculate the error produced by the connection of the voltmeter. 2. Determine the actual readings for the range of forces given. By simple proportion actual range readings are 0.909 g to 999 g
Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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A force sensor is used in an electronic scale to weigh items ranging from 1 gf (gram force) to 1000 gf. The sensor's resistance changes linearly from 1M ohms to 1K ohms as the force changes from 1 gf to 1000 gf (9.80665mN to 9.8665N). To measure the resistance, the sensor is connected to a constant current source of 10 micro A and the voltage across the sensor is measured by a voltmeter with internal impedance of 10 M ohms. Refer to figure 1.
1. Calculate the error produced by the connection of the voltmeter.
2. Determine the actual readings for the range of forces given.
By simple proportion actual range readings are 0.909 g to 999 g
Transcribed Image Text:Figure 1
Voltmeter
Sensor
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