Browse Prior Art Database

Magnetic Head

IP.com Disclosure Number: IPCOM000076099D
Original Publication Date: 1972-Jan-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Barkley, JA: AUTHOR [+2]

Abstract

A magnetic read/write head has two magnetic flux paths of equal reluctance associated with two coils connectable in either series or parallel. The head has a front gap defined by single leg and double-leg sections and two back gaps formed by placing a back section against the other three legs. Coils are slipped over two legs of the double-leg section prior to assembly.

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Magnetic Head

A magnetic read/write head has two magnetic flux paths of equal reluctance associated with two coils connectable in either series or parallel. The head has a front gap defined by single leg and double-leg sections and two back gaps formed by placing a back section against the other three legs. Coils are slipped over two legs of the double-leg section prior to assembly.

Magnetic flux paths L1 and L2 occur during both reading and writing. Highly desirable electrical characteristics are obtained with two coils by eliminating the need for a double wrapping. The desirable equality of reluctance in the paths L1 and L2 is obtained by adjusting the cross sections A1 and A2 of the double legs. An alternate design would provide constrictions in the double legs analogous to the cross sections.

As an example, the double legs would have the following cross sections: A2=2A1.

Advantages of this structure are improved resonance characteristics, due to higher efficiency coil coupling and increased sensitivity.

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