发明名称 Magnetic erasing head
摘要 A magnetic erasing head for use in a radio receiver/tape recorder combination, includes a housing, a core unit of ferrite and an electrical winding. The housing has an opening which leaves a surface of the core unit free for cooperation with a record carrier to be erased. In order to control the generation of higher harmonics of the erasing frequency which might interfere in particular with radio reception on the medium wave range, the core unit is constructed with an entirely open rear circuit. In other words, the usual closing part is absent.
申请公布号 US4366517(A) 申请公布日期 1982.12.28
申请号 US19800182191 申请日期 1980.08.28
申请人 U.S. PHILIPS CORPORATION 发明人 BORGHANS, JOSEPH H.
分类号 G11B5/105;G11B5/127;G11B5/133;G11B5/265;G11B31/00;(IPC1-7):G11B5/27 主分类号 G11B5/105
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