March 31st

Summing Amplifier
In this lab, we implemented a simple op-amp circuit to perform summation.

 The picture shown how the op-amp was connected to the circuit and all the resistances for the resistors. By connecting two voltage supply into the same terminal, we get a summation effect.
Vo = -R3(V1/R1 + V2/R2)
The op-amp has an offset of -12 mV.

 This was how the circuit looks like.


Difference Amplifier
In this lab, we implemented a simple op-amp circuit to perform subtraction.

 The picture shown how the op-amp was connected to the circuit and all the resistances for the resistors. By connecting two voltage supplies into both positive and negative terminals, we get a subtraction effect.
Vo = (R2/R1 +1)R4/(R3+R4)*V2-R2/R1*V1
The outputs which has an arrow pointing to it have reached the saturation voltage.

This is a picture of the circuit.