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R R A, R, A3 ovo RG R, R2 R3 ov REF A2 + V, O

R R A, R, A3 ovo RG R, R2 R3 ov REF A2 + V, O

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter17: Commercial And Industrial Air-conditioning Control Systems
Section: Chapter Questions
Problem 22RQ
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1. Referenced Instrumentation Amplifier

The diagram above represents a 3-amp instrumentation amplifier with a reference input (Vref). The equation that best defines the relationship between the inputs and the output of the circuit is: 

R R A, R, A3 ovo RG R, R2 R3 ov REF A2 + V, O
Transcribed Image Text:R R A, R, A3 ovo RG R, R2 R3 ov REF A2 + V, O
:)() 2R1 Vo = (V2 – Vị) (1+ ) ) + VRef + VREF - R3 Vo = (V2 – Vị + Vrep) (1+ ) ) Vo = (V2 – Vi) (1+ E + VREF (1+) Vo = (V2 – Vi) (1+ )O + VREF (A) V )(1+) + VREF (1 +) ) (1+ ) + VREF 2R1 RG 2R1 - 2R1 - 2R1 = (V2 – V) (1+ - 2R1 Vo = (V2 – Vi) (1+ %3D
Transcribed Image Text::)() 2R1 Vo = (V2 – Vị) (1+ ) ) + VRef + VREF - R3 Vo = (V2 – Vị + Vrep) (1+ ) ) Vo = (V2 – Vi) (1+ E + VREF (1+) Vo = (V2 – Vi) (1+ )O + VREF (A) V )(1+) + VREF (1 +) ) (1+ ) + VREF 2R1 RG 2R1 - 2R1 - 2R1 = (V2 – V) (1+ - 2R1 Vo = (V2 – Vi) (1+ %3D
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