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公开(公告)号:US4023130A
公开(公告)日:1977-05-10
申请号:US571432
申请日:1975-04-24
CPC分类号: G11B3/125
摘要: The vertical movement of a phonograph pick-up arm is controlled magnetically or electro-magnetically by means including a body of magnetic material attached to the arm and magnetic field producing means arranged to exert a force on the body.
摘要翻译: 留声机拾取臂的垂直运动通过包括附接到臂的磁性材料体和磁场产生装置被布置成对身体施加力的装置而被磁力或电磁控制。