A multitrack head for low frequency applications

The magnetic circuit of the head consists of two identical laminations each carrying alternate "C" and "L" shapes attached to a common selvedge. The read and write gaps are formed by the juxtaposition of the upper limbs of the "L" elements with the "C" element...

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Veröffentlicht in:IEEE transactions on magnetics 1972-09, Vol.8 (3), p.542-544
Hauptverfasser: Bate, G., Echelmeier, R., Everett, L., Kehr, W., Schaps, J., Taylor, G., Thornley, R.
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container_end_page 544
container_issue 3
container_start_page 542
container_title IEEE transactions on magnetics
container_volume 8
creator Bate, G.
Echelmeier, R.
Everett, L.
Kehr, W.
Schaps, J.
Taylor, G.
Thornley, R.
description The magnetic circuit of the head consists of two identical laminations each carrying alternate "C" and "L" shapes attached to a common selvedge. The read and write gaps are formed by the juxtaposition of the upper limbs of the "L" elements with the "C" elements, a shim of suitable thickness being inserted between them. The circuit is completed by welding the lower limbs of the "L"s to the "C"s, after a prewound coil has been slid over each "C" element. The pair of laminations are sandwiched between housings and the selvedge is ground off, separating the elements of each track. Heads have shown excellent read and write characteristics in the standard 9-track, 1/2 inch tape format at 1600 bits/inch, phase-encoded, at speeds up to 25 inches/s. At higher frequencies, the eddy-current losses in the magnetic circuit cause the performance to deteriorate.
doi_str_mv 10.1109/TMAG.1972.1067411
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The read and write gaps are formed by the juxtaposition of the upper limbs of the "L" elements with the "C" elements, a shim of suitable thickness being inserted between them. The circuit is completed by welding the lower limbs of the "L"s to the "C"s, after a prewound coil has been slid over each "C" element. The pair of laminations are sandwiched between housings and the selvedge is ground off, separating the elements of each track. Heads have shown excellent read and write characteristics in the standard 9-track, 1/2 inch tape format at 1600 bits/inch, phase-encoded, at speeds up to 25 inches/s. 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At higher frequencies, the eddy-current losses in the magnetic circuit cause the performance to deteriorate.</description><subject>Assembly</subject><subject>Coils</subject><subject>Frequency</subject><subject>Lamination</subject><subject>Magnetic circuits</subject><subject>Magnetic flux</subject><subject>Magnetic heads</subject><subject>Magnetic materials</subject><subject>Magnetic separation</subject><subject>Welding</subject><issn>0018-9464</issn><issn>1941-0069</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1972</creationdate><recordtype>article</recordtype><recordid>eNpNkMFKw0AQhhdRMFYfQLzk5C11JjvZdI-laCtUvNTzst3OYjRt4m6K9O1NSA-ehp_5_mH4hLhHmCKCftq8zZdT1GU-RVAlIV6IBDVhBqD0pUgAcJZpUnQtbmL86iMVCImAebo_1l3VBeu-00-2u9Q3Ia2b39QH_jnywZ1S27Z15WxXNYd4K668rSPfnedEfLw8bxarbP2-fF3M15nLSXUZawCtKNfeovLKFxqdKoEodzMJipA1ouZdQbKUIOV2y0XJiN6So13u5UQ8jnfb0PRvxM7sq-i4ru2Bm2M0-YygKCT1II6gC02Mgb1pQ7W34WQQzODGDG7M4Mac3fSdh7FTMfM_ftz-AfnzXj8</recordid><startdate>19720901</startdate><enddate>19720901</enddate><creator>Bate, G.</creator><creator>Echelmeier, R.</creator><creator>Everett, L.</creator><creator>Kehr, W.</creator><creator>Schaps, J.</creator><creator>Taylor, G.</creator><creator>Thornley, R.</creator><general>IEEE</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>19720901</creationdate><title>A multitrack head for low frequency applications</title><author>Bate, G. ; Echelmeier, R. ; Everett, L. ; Kehr, W. ; Schaps, J. ; Taylor, G. ; Thornley, R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c246t-e90096429fa16f6f591c670442c830641e9119ed54373033bbe57e11fa4c4d2f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1972</creationdate><topic>Assembly</topic><topic>Coils</topic><topic>Frequency</topic><topic>Lamination</topic><topic>Magnetic circuits</topic><topic>Magnetic flux</topic><topic>Magnetic heads</topic><topic>Magnetic materials</topic><topic>Magnetic separation</topic><topic>Welding</topic><toplevel>online_resources</toplevel><creatorcontrib>Bate, G.</creatorcontrib><creatorcontrib>Echelmeier, R.</creatorcontrib><creatorcontrib>Everett, L.</creatorcontrib><creatorcontrib>Kehr, W.</creatorcontrib><creatorcontrib>Schaps, J.</creatorcontrib><creatorcontrib>Taylor, G.</creatorcontrib><creatorcontrib>Thornley, R.</creatorcontrib><collection>CrossRef</collection><collection>Electronics &amp; Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>IEEE transactions on magnetics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Bate, G.</au><au>Echelmeier, R.</au><au>Everett, L.</au><au>Kehr, W.</au><au>Schaps, J.</au><au>Taylor, G.</au><au>Thornley, R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A multitrack head for low frequency applications</atitle><jtitle>IEEE transactions on magnetics</jtitle><stitle>TMAG</stitle><date>1972-09-01</date><risdate>1972</risdate><volume>8</volume><issue>3</issue><spage>542</spage><epage>544</epage><pages>542-544</pages><issn>0018-9464</issn><eissn>1941-0069</eissn><coden>IEMGAQ</coden><abstract>The magnetic circuit of the head consists of two identical laminations each carrying alternate "C" and "L" shapes attached to a common selvedge. The read and write gaps are formed by the juxtaposition of the upper limbs of the "L" elements with the "C" elements, a shim of suitable thickness being inserted between them. The circuit is completed by welding the lower limbs of the "L"s to the "C"s, after a prewound coil has been slid over each "C" element. The pair of laminations are sandwiched between housings and the selvedge is ground off, separating the elements of each track. Heads have shown excellent read and write characteristics in the standard 9-track, 1/2 inch tape format at 1600 bits/inch, phase-encoded, at speeds up to 25 inches/s. At higher frequencies, the eddy-current losses in the magnetic circuit cause the performance to deteriorate.</abstract><pub>IEEE</pub><doi>10.1109/TMAG.1972.1067411</doi><tpages>3</tpages></addata></record>
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ispartof IEEE transactions on magnetics, 1972-09, Vol.8 (3), p.542-544
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1941-0069
language eng
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source IEEE Electronic Library (IEL)
subjects Assembly
Coils
Frequency
Lamination
Magnetic circuits
Magnetic flux
Magnetic heads
Magnetic materials
Magnetic separation
Welding
title A multitrack head for low frequency applications
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