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Hybrid Toroidal Transformer Winding

IP.com Disclosure Number: IPCOM000082478D
Original Publication Date: 1974-Dec-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Werner, A: AUTHOR

Abstract

This transformer is constructed by applying "flat" cable bodies 10 and 12 to the inner and outer diameter surfaces, respectively, of a toroidal core 14. Core 14 may be of ferrite, nickel-iron tape, etc., or it could be nonmagnetic. Inner body 10 has an array of vertically oriented conductors 16 equal in number to the conductors 18 of the outer cable body 12.

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Hybrid Toroidal Transformer Winding

This transformer is constructed by applying "flat" cable bodies 10 and 12 to the inner and outer diameter surfaces, respectively, of a toroidal core 14. Core 14 may be of ferrite, nickel-iron tape, etc., or it could be nonmagnetic. Inner body 10 has an array of vertically oriented conductors 16 equal in number to the conductors 18 of the outer cable body 12.

Deposited on insulating coatings on the top and bottom surfaces of core 14 are first and second arrays of link conductors, which extend over the edges of 10 and 12 into conductive contact with respective ends of conductors 16 and 18. These link conductors may be in the form of bars (shown in phantom line at 20) generally radially oriented, but skewed by the amount of the pitch of conductors 16 and 18 so as to form helical coils therewith. Alternatively, the required skew can be provided in the orientation of conductors 16 and 18.

If the skew is made equal to double the pitch of conductors 16 and 18, the resulting windings will be bifilar. In the same manner, tri or higher order filar windings can be formed.

As an alternative, the windings may be provided by deposition of conductor material in grooves preformed in the surface of a dielectric case-body (e.g., two piece) fitted onto the core. In such case, the core 14 would preferably be of rounded cross section.

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