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Transformer with No Secondary Leakage Inductance

IP.com Disclosure Number: IPCOM000095502D
Original Publication Date: 1964-Feb-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Cheng, TH: AUTHOR

Abstract

This is a method for obtaining a magnetic coupling between the primary and secondary conductors of a superconductive transformer yet diminish the leakage inductance from the secondary conductor of the transformer.

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Transformer with No Secondary Leakage Inductance

This is a method for obtaining a magnetic coupling between the primary and secondary conductors of a superconductive transformer yet diminish the leakage inductance from the secondary conductor of the transformer.

The primary winding or conductor 2, as in b, is a suitable metal, e. g., tin, deposited by vapor deposition techniques onto a flexible insulated tape 4. Dotted lines, w, x and y indicate the places where tape 4 can be folded to obtain the configuration shown in c. The parallel layers 6 and 8 (see a) provide the secondaries of the transformer. They are laid down on suitable insulated substrates.

Tabs 10 and 12 are provided to make the secondary windings 6 and 8 connectible to other substrates carrying evaporated circuitry.

When folded primary winding 2 is inserted between secondary windings 6 and 8, the total secondary current fed into the load inductance, the superconductor circuitry to which tabs 10 and 12 connect, is always equal to the primary current in conductor 2. Such is regardless of the misalignment between primary 2 and either secondary 6 or 8. This condition exists when the spacings between primary and secondary conductors are less than the widths of the respective conductors 2, 6 and 8.

The above spacings minimize secondary leakage inductance, but they may increase primary 2 leakage inductance, the latter affecting the rise time of the feed-in current pulse applied to conductor 2. Since the fe...