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公开(公告)号：US3721612A
公开(公告)日：1973-03-20
申请号：US3721612D
申请日：1969-11-07
Applicant: THOMSON CSF
CPC classification number: H01F10/06 , H01F2029/143 , Y10T29/49069
Abstract: The invention has for object a method of manufacturing a magnetic circuit element, consisting of an hollow elongated cylinder. Alternate layers of copper and gold are deposited by electrolysis over a metal substrate thus forming a stacked body. This body is separated from the substrate. Ferromagnetic material is deposited over the stacked body. The cylinder is then formed. The copper inside the cylinder is then removed and replaced by insulating material.
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