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.
Right Answer is:
11
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