SENSING ELECTRICAL CURRENT IN A CONDUCTOR

摘要

A sensor comprises primary ferrite members (362) spaced apart from the magnetic field sensor (20) on opposite sides of the magnetic field sensor to concentrate or steer an orientation of a magnetic field of the observed signal toward a target area (409) of the magnetic field sensor (20). A magnetic field sensor (20) senses a direct current signal component or lower frequency component of the observed signal. A first filtering circuit has a high-pass filter response. The first filtering circuit is coupled to the inductor to provide a filtered alternating current signal component. A second filtering circuit has a low-pass filter response. The second filtering circuit coupled to the magnetic field sensor to provide a filtered direct current signal component. A sensor fusion circuit determines an aggregate sensed current based on the filtered alternating current signal component and the filtered direct current signal component.