FOR THE LIFE OF ME I can't prove that the Type 1 error amplifier works the way my textbook claims it does. (figure 1, pg2)
It just looks like two voltage dividers, Vref = Rb / (Zc + R4) = R4 / (R1 + R4). But I can't factor out the R4 and I'm thinking it's because I'm trying to do AC analysis on the amplifier which is essentially an unknown circuit but I want to be able to derive this stuff myself.
It just looks like two voltage dividers, Vref = Rb / (Zc + R4) = R4 / (R1 + R4). But I can't factor out the R4 and I'm thinking it's because I'm trying to do AC analysis on the amplifier which is essentially an unknown circuit but I want to be able to derive this stuff myself.