Smart AC Resistor Bed: A Hybrid Safety System for AC Circuits Inspired by DC Limiting Methods

This study introduces a novel “smart resistor bed” system for AC circuits, inspired by the inherent safety features of DC current limiting. We propose a hybrid architecture in which a bank of high-power resistors (“resistor bed”) is automatically switched into the AC supply path only during hazardous events, such as short circuits or dangerous current surges. The method combines the reliability of traditional AC protections (relays, fuses, RCDs) with the physical current-limiting approach typical of DC safety [1,2], achieving enhanced circuit security and reducing damage risk. A Python-based simulation and experimental design are presented to demonstrate effectiveness and feasibility.The author acknowledges the use of OpenAI’s language model for assistance in drafting certain sections of this workl