Exercise 3.4.1 non-inverting amplifier
For the non-inverting amplifier, derive the voltage gain. Use the procedure that was used for the voltage follower..
Considering the golden rules of an amplifier leads to the output voltage signal
\begin{equation*}
U_O=U_I+R_1\cdot I=U_I+R_1\cdot\frac{U_I}{R_2}=(1+\frac{R_1}{R_2})\cdot U_I
\end{equation*}
The gain $A_V$ is the output voltage signal in relation to the input voltage signal.
\begin{equation*}
A_V=\frac{U_O}{U_I}=1+\frac{R_1}{R_2}
\end{equation*}