Here is an interesting op-amp circuit which - it is claimed - can be used to add two signals.

Your task in this exercise is to do the following.

• Choose resistors so that the first voltage - V₁ - is multiplied by 1.
• Choose resistors so that the second voltage - V₂ - is multiplied by 2.
• Add two sinusoidal signals that are the same frequency and the same amplitude.
• Use signals of equal amplitude, 2v p-p.
• Use a frequency of 1 kilohertz (1KHz).
• Add two signals where.
• The first signal is a sinusoid as above.
• The second signal is a square wave, 1v p-p.
• Use a frequency of 1 KHz.
• Add two sinusoidal signals of the amplitude above (2v p-p), where
• You adjust the resistors in the circuit so that you get a sum (both signals multiplied by 1)
• The first signal is at a frequency of 900 Hz.
• The second signal is at a frequency of 1100 Hz.
• You will need two signal/function generators for this experiment.
• Your write-up should explain the wave shapes for each result.