Summing Amplifier

 Here is a pic of our pre lab, we chose 22kOhms for our resistors. The actual values however were, R1=21.5kOhm, R2=21.7kOhm R3=21.4kOhm. Since our R values should betheoretically equal, our Vout equation should be Vout=-(Va+Vb).

























Our values made since except for Va=1, the value should've been -1V but it was -1.94V. For the last two values the %error was huge because of the saturation of the Op-Amp.



Here are our experimental values from our board


















 Here's our circuit

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