Bobbin-wound current sense transformer

Details Bobbin-wound current sense transformer Bobbin-wound current sense transformer

1999-03-16

2000-06-06

Gellner, Michael L.

Inductor devices

With supporting and/or spacing means between coil and core

Preformed insulation between coil and core

336208, 336192, H01F 2729, H01F 2730

Patent

active

060723807

ABSTRACT:
A bobbin-wound current sense transformer includes a regular bobbin secondary winding that has a central aperture and a U-shaped staple that also functions as a one turn primary winding. This dual function of the U-shaped staple eliminates the need for a separate primary winding and a separate primary terminal. Magnetic coupling for the primary and secondary windings is provided through a core that has a first and a second member. A primary bobbin flange and a secondary bobbin flange with each having a central aperture provides electrical isolation from the primary winding to the secondary winding and the core. The first and second members of the core are connectable through a central aperture to form a magnetic path linking the bobbin secondary winding and the primary winding. The bobbin flanges are arranged along the central aperture to provide electrical isolation from the primary winding to the secondary winding and the core. The primary winding can have a plurality of U-shaped staples instead of one U-shaped primary terminal.

REFERENCES:
patent: 4200853 (1980-04-01), Jong et al.
patent: 4419645 (1983-12-01), Lennon
patent: 5181004 (1993-01-01), Johnson
patent: 5774028 (1998-06-01), Kim
patent: 5847518 (1998-12-01), Ishiwaki
Falco, "Current Sensor" Brochures, see enclosed, Oct. 1998.
Coilcraft Brochure, see enclosed, Jun. 1997.
T.J. Assemblies, Inc., Brochures, see enclosed, dated unknown.

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