Current transformer using a laminated toroidal core structure an

Details Current transformer using a laminated toroidal core structure an Current transformer using a laminated toroidal core structure an

1994-07-19

1995-06-20

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29423, 29606, 29609, 336200, 336234, H01F 4102

Patent

active

054251664

ABSTRACT:
A current transformer device is formed on a ceramic substrate which is provided with a plurality of planar conductive tracks formed on a surface of the substrate where the conductive tracks extend substantially radially from an imaginary point on the surface of the substrate. A structure of permeable material is then tape cast or epitaxially formed by vapor deposition of a thick film of magnetic ceramic over the major portion of each of the conductive tracks to form a permeable toroidal core. A lead frame is then placed over the core and a plurality of metal conductors are soldered to each of the respective exposed ends of the metal conductive tracks on the substrate. The required electrical elements to complete the current transformer device are mounted to a second side of the ceramic substrate and electrically connected to the toroidal coil for powering and/or receiving signals therefrom.

REFERENCES:
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patent: 4217168 (1980-08-01), Ridgway et al.
patent: 4297647 (1981-10-01), Akiyama et al.
patent: 4522671 (1985-06-01), Grunwald et al.
patent: 4777465 (1988-10-01), Meinel
patent: 4823075 (1989-04-01), Alley
patent: 5015945 (1991-05-01), Radun

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