25 ELECTRICAL ENGINEERING DEPARTMENT California Polytechnic State University EE 361 Operational Amplifier (Op-Amp) Circuits Part 1 Pre-lab 4 Voltage Follower, Non-Inverting Amplifier & Inverting Amplifier 1.Prove the closed-loop gain (Vo/ Vi) for the op-amp circuit below equals 1. +12V-12V+-V+V-VOV12.Derive the closed-loop gain (Vo/ V1) for the op-amp circuit below. Also, can this op-amp circuit “attenuate” a signal? Why or why not?
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26 3.The op-amp circuit below is an inverting amplifier. Sketch Voif RA= 1KΩ, RB= 10KΩ and V1= cos (628t) Volts.Be certain to label, with numerical values, peak voltage and period.