Adding flux paths to SPICE's analytical capability improves the ease and accuracy of simulating power circuits

SPICE technology is applied to the analysis of flux paths as well as current paths. Circuit duals and symbols are developed for all magnetic elements using the basic Gyrator Re-Cap core model. Magnetic circuits are created with these symbols to demonstrate the ease and accuracy of simulating all major magnetic phenomena. The following magnetic devices are modeled: forward and flyback transformers; coupled inductor/transformers; ferroresonant regulators; and magnetic amplifiers (with both current and voltage control).