(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

For the following circuit, sketch v2/v1 as a function of R4, if R1=R2=R3=R5=R. Also explain the behaviour of the circuit when R4=R/2.

2. Relevant equations

3. The attempt at a solution

After solving the circuit, i came up with v2/v1=2R4/(2R4-R). Now, if R4=R/2 , gain=infinite, is that ok? plus, what happens, when 2R4<R?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Op amp circuit problem

**Physics Forums | Science Articles, Homework Help, Discussion**