Micro current transformers have revolutionized the field of electrical current measurement by enabling precise and accurate monitoring of low-level currents. With their ability to step down current levels without sacrificing accuracy, these transformers find extensive use in applications where measuring currents in the microampere range is essential. In this article, we will explore the technical aspects of micro current transformers, their working principles, benefits, and the latest advancements that have elevated their significance in modern electronics.

A rogowski coil is a circular coil evenly wound around a non-ferromagnetic material. The output signal is the derivative of the current with respect to time. Through a circuit integrating the output voltage signal, the input current can be truly restored. The coil has the characteristics of real-time current measurement, fast response speed, no saturation, suitable for AC, especially high frequency current measurement.