Trannsformer assembly and a method of manufacturing the...

H - Electricity – 01 – F

Patent

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26/116, 336/56,

H01F 27/34 (2006.01) H01F 27/02 (2006.01) H01F 27/30 (2006.01) H01F 41/00 (2006.01)

Patent

CA 1070397

ABSTRACT OF THE DISCLOSURE: A transformer assembly comprising a core structure having an open space, primary and secondary coil units mounted in concentric relationship on the core structure, and a unitary insulating envelope of heat-resistant dielectric material such as silicon rubber encapsulating the entire construction of the core structure and the primary and secondary coil units and occu- pying the open space in the core structure which is subject to production of a corona discharge due to a high voltage developed in the secondary coil unit. The insulating envelope is formed by injecting the dielectric material of fluid state into a mould to which the subassembly of the core structure and coil units is fitted in part or in its entirety except for terminal elements. A partial vacuum is established in the mould so that the insulating envelope produced is void-free. The transformer is useful espe- cially as a flyback transformer for use in the horizontal deflec- tion circuit of a television receiver. A method of manufacturing the transformer assembly is also described.

245439

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