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Q9

Electronics

#0000091694

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Two AC signals, V ₁ and V ₂, are to be combined such that

V_{out} = \frac{3}{2} V_{2} - \frac{5}{2} V_{1}

The subtracting amplifier circuit shown is used. What must be the values of R ₁, R ₂, R ₃, and R ₄?

A. R ₁ = 2 kΩ, R ₂ = 2 kΩ, R ₃ = 5 kΩ, R ₄ = 3 kΩ

B. R ₁ = 2 kΩ, R ₂ = 4 kΩ, R ₃ = 5 kΩ, R ₄ = 3 kΩ

C. R ₁ = 4 kΩ, R ₂ = 8 kΩ, R ₃ = 10 kΩ, R ₄ = 2 kΩ

D. R ₁ = 5 kΩ, R ₂ = 3 kΩ, R ₃ = 4 kΩ, R ₄ = 2 kΩ