发明授权
- 专利标题： Switching circuit for connecting a magnetic head in a magnetic recording and reproducing apparatus
- 专利标题（中）： 用于将磁头连接在磁记录和再现装置中的切换电路
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申请号： US518769申请日： 1974-10-29
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公开(公告)号： US3959817A公开(公告)日： 1976-05-25
- 发明人: Yoshihiko Honjo , Seisuke Hiraguri
- 申请人： Yoshihiko Honjo , Seisuke Hiraguri
- 申请人地址： JA Yokohama
- 专利权人： Victor Company of Japan, Limited
- 当前专利权人： Victor Company of Japan, Limited
- 当前专利权人地址： JA Yokohama
- 优先权： JA48-131218[U] 19731115; JA48-128429 19731116
- 主分类号： G11B15/12
- IPC分类号： G11B15/12 ; H03F3/72
摘要：
A switching circuit connects a magnetic head in a magnetic recording and reproducing apparatus. The magnetic head is used for recording and reproducing signals onto and from a magnetic recording medium. The switching circuit comprises a first electronic switch connected between ground, the output side of a recording amplifier, and one terminal of the magnetic head. The switch becomes nonconductive during the recording mode and becomes conductive during the reproducing mode. A second electronic switch circuit is connected substantially between ground, the other terminal of the magnetic head, and the input side of a reproducing amplifier. The second switch becomes conductive during recording and nonconductive during the reproducing mode.
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