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A method for the design and analysis of induction heating systems is presented. The method entails the simulation of system performance using an equivalent circuit approach. Equivalent circuit models are obtained for the three parts of an induction heating system: the power source, the impedance matching circuit, and the load. These models are combined into a system model which is analyzed using the advanced continuous simulation language (ACSL). This approach is applied to an existing system, and the predicted performance is in close agreement with measured data.