Multi-channel uniform output type transformer
AssigneeFdk Corporation
InventorsFumiaki Nakao, Satoshi Ohta, Mikio Kitaoka, Katsuo Yamada, Hiroshi Sakamoto
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Abstract
A multi-channel output type transformer for outputting uniformly balanced voltage among multiple output channels. The transformer comprising a primary winding and a secondary winding that is wound round a winding shaft portion of a core. The secondary winding of the transformer is a flat cable belt comprising covered conductors corresponding to the number of output channels. The cable belts are arranged in parallel. A plane loop is formed by appropriately folding the flat cable belt, and the plane loop member is arranged to as to substantially orthogonally intersect the winding shaft of the core.
Claims22
A multi-channel uniform output type transformer, comprising a primary winding and a secondary winding wound round a winding shaft portion of a core, for outputting uniformly balanced voltage from each of multiple output channels,
- wherein:
- said secondary winding is a flat cable belt covered with an insulating film and comprises a plurality of parallel conductors of the same number as said output channels;
- a plane loop is formed on a printed circuit substrate by folding said flat cable belt more than two times in such a manner that one flat surface of said flat cable is reversed upon the other flat surface by each folding;
- and
- said plane loop is substantially orthogonally placed about said winding shaft of said core.
A multi-channel uniform output type transformer, comprising a primary winding and a secondary winding wound round a winding shaft portion of a core, for outputting uniformly balanced voltage from each of output channels, wherein:
- said primary winding is a primary sheet coil comprising one printed circuit formed in a loop shape or in a helical shape on a substrate;
- said secondary winding is a secondary sheet coil comprising printed patterns formed on both front and back surface of said substrate in such a manner that one ends of the printed patterns on said front surface are located directly above one ends of the printed patterns of said back surface of said substrate;
- said printed patterns on said both surfaces are connected with each other via throughholes each made at said one ends of said printed patterns to form a coil pattern;
- said coil patterns can be seen in a transparent view like the printed patterns on the front surface of said substrate are folded upon said printed pattern on the back surface at said one of the said both printed patterns via said throughholes;
- said primary sheet coil and said secondary sheet coil are arranged so as to substantially orthogonally placed about said winding shaft of said core.
Dependencies are inferred from the claim text.