EE330 ideal op-amp notes

# EE330 ideal op-amp notes - Foundation of Circuit Analysis...

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Foundation of Circuit Analysis: Linearity is the most important concept in circuit analysis that will simplify our work. Linear systems obey the superposition rule. If the I-O of a given system lies on a line, then the output to any input is predictable. All elements that you studied in 211were linear (R, L, C). Here we will deal with nonlinear elements (Diodes and Transistors). Nonlinear system fail superposition and therefore they are much harder to analyze. But natural systems are inherently nonlinear. So the first step in the analysis is to investigate their behavior in a small range and see if it can be approximated by a linear I-O. This process is known as small signals analysis . Type of Analysis: DC (I-O) AC (Small signal, Large Signal) Sinusoidal, Triangular, Rectangular Inputs. Transfer Function (Magnitude and Phase) Transfer function: Is a plot of output vs. input (V/V, I/V(admittance), V/I (impedance) or I/I versus frequency of the input (often in log scale).

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