Magnetic circuit arrangement for determining electric current, has air gap length corresponding to thickness of magnetic field sensor joined to printed circuit

摘要

The magnetic circuit arrangement determines a current using an induced magnetic field and has two yoke sections (2a,2b) joined by a third yoke section (2c) and a magnetic circuit closed by an air gap (8) between the first and second yoke sections containing a magnetic field sensor arrangement (3). The length of the air gap corresponds approximately to the thickness of the magnetic field sensor arrangement joined to a printed circuit (4).