Consider the circuit shown in figure below Take Rf 15 k ohm

Consider the circuit shown in figure below. Take R_f = 15 k ohm. (Figure 1) Find the voltage gain. Express your answer to three significant figures. Find the output voltage if the input voltage is 4.5 V. Express your answer to three significant figures and include the appropriate units.

Solution

For A non -Inverting amplifire

Vo= (1+ Rf/Rin) Vin

Vo= (1+15 K/10K)4.5

= (1+1.5)4.5

= 2.5*4.5= 11.25 V

V0= 11.25 V

Gain Av= V0 / Vin = 11.25/4.5 =2.5