Adding Op-Amp Circuit: Weighting Inputs

[Anabelle37]

Homework Statement

Suppose you wanted to weight the inputs by different factors such that for instance Vo = V1 + 2V2 + 3V3. Describe how you would construct a circuit to do this.

 

[nickmai123]

Homework Statement

Suppose you wanted to weight the inputs by different factors such that for instance Vo = V1 + 2V2 + 3V3. Describe how you would construct a circuit to do this.

Firstly, you ignored the equations section. Please enter the equations you know. Secondly, you didn't put any attempt at a solution. The purpose of PhysicsForums isn't to do your homework for you but rather guide you towards a solution. On top of that, I don't think this question is in the proper forum, since it's an electrical engineering question.

All of that said, do you know how an op-amp works? By that I mean, what does an op-amp do? Do you know what the inverting and non-inverting configurations are? Have you tried looking up what a summing amplifier circuit looks like?