# For the non-inverting amplifier as shown, find the closed loop voltage gain.

For the non-inverting amplifier as shown, find the closed loop voltage gain.

#### SOLUTION

Circuit diagram:

Two terminals of Op-Amp i.e.; Inverting Terminal and Non-Inverting Terminal are at equipotential.

Apply KCL at node 1 Vpp,

$\begin{array}{l} \dfrac{{1{V_{pp}} – 0}}{{10\:k}} + \dfrac{{1{V_{pp}} – {V_0}}}{{100k}} = 0\\ \\ \dfrac{{10{V_{pp}} + 1{V_{pp}} – {V_0}}}{{100K}} = 0 \end{array}$

11Vpp − VO = 0

Closed-loop gain is given by the ratio of output to the input.

so the Closed-loop voltage gain is given by,

VO/VPP = 11

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