| Line 29: | Line 29: | ||
The op amp can be ignored for this particular problem.<br /> | The op amp can be ignored for this particular problem.<br /> | ||
We can apply the formula we learned in class to solve for Vout.<br /> | We can apply the formula we learned in class to solve for Vout.<br /> | ||
| + | |||
<math>\begin{align} | <math>\begin{align} | ||
Vout = (\frac{-R_f}{R_1})V_1 + (\frac{-R_f}{R_1})V_2 | Vout = (\frac{-R_f}{R_1})V_1 + (\frac{-R_f}{R_1})V_2 | ||
| + | Vout = (\frac{-72}{24})4 + (\frac{-72}{36})6<br /> | ||
Vout = -24V | Vout = -24V | ||
\end{align} | \end{align} | ||
Revision as of 16:56, 26 April 2015
Summing Amplifier Practice
Practice question for ECE201: "Linear circuit analysis I"
By: Chinar Dhamija
Topic: Summing Op Amp
Question
Find the output voltage, Vout.
Answer
First we know that $ V_- $ = $ V_+ $
$ V_- $ = 0V = $ V_+ $
The op amp can be ignored for this particular problem.
We can apply the formula we learned in class to solve for Vout.
$ \begin{align} Vout = (\frac{-R_f}{R_1})V_1 + (\frac{-R_f}{R_1})V_2 Vout = (\frac{-72}{24})4 + (\frac{-72}{36})6<br /> Vout = -24V \end{align} $
Questions and comments
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