Browse Prior Art Database

Hall Effect Current Sense Module

IP.com Disclosure Number: IPCOM000083140D
Original Publication Date: 1975-Apr-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Arnold, AJ: AUTHOR [+5]

Abstract

The present loop design minimizes flux leakage and the number of air gaps, while concentrating the flux through the Hall device to increase the sensitivity. The package design permits easy parting to seat the unit over cables or through coils, with return to the original gap distance and loop contact.

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Hall Effect Current Sense Module

The present loop design minimizes flux leakage and the number of air gaps, while concentrating the flux through the Hall device to increase the sensitivity. The package design permits easy parting to seat the unit over cables or through coils, with return to the original gap distance and loop contact.

Fig. 1 shows the substrate subassembly 10 including details of its printed pattern 11 and the construction and location of the joined chip 12. In Fig. 2 there is shown the assembled module 13 with the substrate 10 located in relation to the flux loop comprising the two half-loops 14 and 15 encased in a molded plastic housing 16.

By removing the two screws, the housing 16 may be parted in the horizontal plane to permit seating over the cables or coil whose current is to be sensed. When brought back together, the gap between the two concentrators, the tapered ends of the loops, maintained by a standoff arrangement of six columns molded into the upper housing cavity, which passes through the six unoccupied holes in the substrate 10 to seat against a shelf molded into the lower housing cavity. Intimate contact is simultaneously forced between the upper and lower flats at the back of the loops as the screws are drawn up.

All plastic surfaces which might interfere with this seating arrangement are recessed.

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