Proximity Effect


Proximity effect refers to the phenomenon where the effective current flowing cross-sectional area inside a conductor is reduced due to the close proximity of nearby current-carrying wires.



Understanding and mitigating the proximity effect is important in the design and operation of electrical systems, especially those involving high-frequency AC currents. Proper conductor spacing, geometric arrangement, and use of techniques such as litz wire (stranded wire with individually insulated strands) can help minimize the impact of the proximity effect and reduce its detrimental effects on resistance, power loss, and inductor performance.