Simulation and modeling-computer-aided, open-loop circuit analysis

An inverse circuit method is presented for performing computer-aided, open-loop circuit analysis. The analytical method consists of placing the circuit to be analyzed into the feedback loop of a high-gain differential current amplifier model. The gain of the resultant circuit is the inverse of the original gain. Also, the roles of the input and output are interchanged and the input to the original circuit can be determined as a function of its output. Both the output voltage and current are taken to be the closed-loop feedback voltage and current at the point where the loop is broken; thus, the output of the open loop is always properly loaded.<>