Coupled inductors are essential components in electronic circuits, particularly in applications involving transformers, power supplies, and resonant circuits. Unlike isolated inductors, coupled inductors share a magnetic field, leading to mutual inductance. This mutual inductance allows energy to be transferred between the inductors without a direct electrical connection, enabling voltage and current transformations. The degree of coupling is quantified by the coupling coefficient (k), which ranges from 0 (no coupling) to 1 (perfect coupling).