Question

Given Vout = 17.33 vpp and R1 = 3 kΩ, find the value of RF required to provide Av = 4.33. (Round your answer to 2 decimal places.) Rf = kΩ. (Round your answer to 2 decimal places.) What is the magnitude of V2? V2 = vpp. What is the phase of V2? Phase = o.

Answer 1

Answer:

The magnitude of $V_{2}$ is 4 V and phase of input voltage is zero

Explanation:

Given:

Output voltage $V_{out} = 17.33$

Resistance $R_{1} = 3$ kΩ

Voltage gain $A_{v} = 4.33$

For finding feedback resistance we use gain equation

Gain equation for non inverting op-amp is given by,

     $A_{v} = 1+\frac{R_{f} }{R_{1} }$

   $4.33 = 1+ \frac{R_{f} }{3 k }$

     $R_{f}$ ≅ 10 kΩ

For finding input voltage we use,

   $A_{v} = \frac{V_{out} }{V_{2} }$

    $V_{2} = \frac{17.33}{4.33}$

    $V_{2} = 4$ V

The Phase of $V_{2}$ is zero because output voltage phase is 360°

Therefore, the magnitude of $V_{2}$ is 4 V and phase of input voltage is zero