Figure 9.11 Strain gauge bridge connected to differential amplifier. Rf R1 |R2 D AOL Vs B, V2 R4 |R3 VOUT Rf

Introductory Circuit Analysis (13th Edition)
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this question from Measurements and Instrumentation course.

And this question from book:

Princeple of Measurement Systems by John P. Bentley, 4th edition.

all you need in the two pictures .

A strain in the range 0 to 103 is to be measured using a four-strain-gauge bridge connected
to a differential amplifier (Figure 9.11). The strain gauges have resistance 120 Q and gauge
factor 2.1, and the supply voltage is 15 V. Find the value of the amplifier feedback resistance
if the output signal range is 0 to 1.0 V.
9.10
Transcribed Image Text:A strain in the range 0 to 103 is to be measured using a four-strain-gauge bridge connected to a differential amplifier (Figure 9.11). The strain gauges have resistance 120 Q and gauge factor 2.1, and the supply voltage is 15 V. Find the value of the amplifier feedback resistance if the output signal range is 0 to 1.0 V. 9.10
Figure 9.11 Strain gauge
bridge connected to
differential amplifier.
Rf
R1
R2
AOL
Vs
V2
B.
+
R4
|R3
VOUT
RF
Transcribed Image Text:Figure 9.11 Strain gauge bridge connected to differential amplifier. Rf R1 R2 AOL Vs V2 B. + R4 |R3 VOUT RF
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