Stromkompensierter Magnetfeldsensor und Verwendung desselben in einem Drehwinkelsensor

摘要

A current-compensated magnetic field sensor has a magnetic core (1) and a coil (2) which surrounds the magnetic core (1). Both a pulse-shaped current and a compensating current may flow through the coil. The reset pulses which follow each reset current pulse sent through the coil (2) are compared to each other and used to determine the compensating current. This makes it possible to produce, for example, a sensor for angles of rotation with a simple design and very precise operation.