Current sensing devices and methods

摘要

A low-cost and high-precision current sensing device and methods for use and manufacturing. In one embodiment, the current sensing apparatus comprises a Rogowski-type coil which is manufactured in segments so as to facilitate the manufacturing process. In an exemplary embodiment, the current sensing apparatus segments are asymmetric in shape and/or composition (e.g., bobbin shape, size, and/or winding configuration) so as to account for asymmetries in the magnetic field distribution around a bus bar, or to accommodate its shape in a more compact form factor, and/or to improve the immunity to the effects of an external magnetic field. Methods of manufacturing and using the aforementioned current sensing apparatus are also disclosed.

主权项

1. A current sensing inductive device, comprising:
a plurality of coil-like sensing elements; and a hinged housing having both an open and a closed form, the hinged housing having an aperture associated therewith, the hinged housing further configured to articulate about a hinge; wherein the hinged housing comprises one or more snap features disposed at a perimeter region thereof external to the aperture, the one or more snap features configured to maintain the hinged housing in the closed form; and wherein the one or more snap features are disposed on an opposing side of the aperture with respect to the hinge.