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Circuits Lab...

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Matthew Matusek Op Amp Lab 10/23/17

Purpose: To familiarize ourselves with the two most common types of Op Amps and how to derive their Vout equations. Also to then apply those skills and design a circuit of our own to satisfy an equation. Difference Op Amp:

Summing Op Amp:

Cascading Op Amp with Design Problem:

Summing Op Amp

Design Problem Explanation and Table: Expected (v)

Measured (v)

V1=2 & V2=1

4v

4.04v

V1=3 & V2=2

5v

5.06v

V1=4 & V2=3

6v

6.04v

Knowing that the ratio for the resistors had to to be a 2:1 from the derivation it was simple to pick the 20 and 10k resistors. I took the main idea from the Difference Op Amp and just tacked on the coefficients to the beginning of the voltage variables. It presented a simple design solution to something that could have had cascading Op Amps....