发明名称 MOVING COIL TYPE STEREOPHONIC PICKUP CARTRIDGE
摘要 <p>In a moving coil type stereophonicpickup cartridge, an armature is provided having first, second, and third leg portions which extend in three substantially mutually orthogonal directions. A source of magnetic flux is disposed with only one pole thereof adjacent to the first, second and third leg portions of the armature. The magnetic circuits thus constructed, having an open return path, generate signals by changes in the magnetic flux through coils wound on the second and third leg portions due to the movement of the armature relative to the magnetic source. Variations in the design of the three leg armature and the magnetic source are disclosed. Practical embodiments of the invention include disclosure of cartridge replacement features providing convenient electrical connection between moving coils and remainder of the sound reproduction system.</p>
申请公布号 CA1139233(A) 申请公布日期 1983.01.11
申请号 CA19800344937 申请日期 1980.02.01
申请人 NIPPON ATSUDENKI KABUSHIKI KAISHA 发明人 UCHIDA, RYUICHI;TERASAKI, KAORU;NISHINO, TAKEO
分类号 H04R9/16;(IPC1-7):H04R9/16 主分类号 H04R9/16
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