A high-precision current sensor leverages fundamental magnetic principles combined with multi-channel feedback compensation, ensuring the sensor operates in a state of zero magnetic flux, offering exceptional measurement precision. Due to the sensor's magnetic core being insensitive to temperature, sensors based on the zero magnetic flux principle not only measure both AC and DC simultaneously but are also less affected by environmental temperature variations, boasting high measurement accuracy, a wide measurement frequency band, and excellent stability. It is widely used in various fields such as power systems, motor control, energy management, among others, for applications including current monitoring, power load control, fault detection, and other scenarios.