Browse Prior Art Database

Shielding the Snare in the Front-End Electronics of a Direct Access Storage Device

IP.com Disclosure Number: IPCOM000062513D
Original Publication Date: 1986-Dec-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 2 page(s) / 27K

Publishing Venue

IBM

Related People

Liu, CH: AUTHOR

Abstract

A flexible tube or snare is often used to surround fine wire leads, such as those extending from the transducer of a disk drive actuator assembly, to afford protection against tangling or abrasion. Although this provides mechanical protection, there is also a need to obtain noise reduction through protection against electromagnetic conditions. To protect against electrical noise as well as mechanical abrasion, the snare illustrated in the figure shows a flexible tube 3 surrounding the electrical leads 4 with a conductive layer 5 surrounding the flexible tube. The conductive layer 5 is electrically connected to a grounding lead 6. The conductive layer may be a braided wire tube of conventional design that closely surrounds the flexible tube.

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Shielding the Snare in the Front-End Electronics of a Direct Access Storage Device

A flexible tube or snare is often used to surround fine wire leads, such as those extending from the transducer of a disk drive actuator assembly, to afford protection against tangling or abrasion. Although this provides mechanical protection, there is also a need to obtain noise reduction through protection against electromagnetic conditions. To protect against electrical noise as well as mechanical abrasion, the snare illustrated in the figure shows a flexible tube 3 surrounding the electrical leads 4 with a conductive layer 5 surrounding the flexible tube. The conductive layer 5 is electrically connected to a grounding lead
6. The conductive layer may be a braided wire tube of conventional design that closely surrounds the flexible tube. In the alternative, thin film technology may be used to apply a metal coating to the surface of the flexible tube. This coating should have a least a one-mil thickness to provide sufficient skin depth for adequate electrical shielding.

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