HIGH-PRECISION WHOLE PCB-MOUNTED CLOSED-LOOP AXISYMMETRIC MAGNETIC CIRCUIT MAGNETIC CORE COIL COMPONENT FOR HALL CURRENT SENSOR

摘要

A closed-loop axisymmetric magnetic circuit magnetic core coil component for a Hall current sensor includes two skeletons, a magnetic core and coil windings. The skeletons include an inner skeleton and an outer skeleton, wherein the inner skeleton is wound with a secondary coil winding, and the outer skeleton is wound with a primary coil winding. The inner skeleton and the outer skeleton are inserted towards and locked by each other, and a magnetic core slot and jack are provided on the skeletons. A magnetic core is formed by inserting multiple layers of riveting magnetic sheets with different widths towards each other. The magnetic core is of an axisymmetric magnetic circuit structure, and a single air gap is located at the end of the axis of symmetry near the magnetic core, with Hall elements being provided within the air gap. The magnetic core is mounted in the magnetic core slot and jack of the skeletons, and coil windings on the inner and outer skeletons are located on the axis of symmetry of the magnetic core, and the magnetic core coil component is mounted on a printed circuit board. The magnetic core coil component is of a simple structure, is convenient to mount and is of high precision.