Playback head in cassette player is an application of electr

2007-04-03 5:48 am
Playback head in cassette player is an application of electromagnet?

回答 (1)

2007-04-03 6:00 pm
✔ 最佳答案
錄音(影)磁頭為一C型磁芯,繞以線圈,其C形開口處為一狹縫,此狹縫與磁帶接觸並與拉動方向垂直,錄了音(影)的磁帶在狹縫擦過,影響磁芯之磁通量,使線圈產生感應電流,經放大後播出.


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