Polarity detecting system for magnetic head voice coil
The utility model relates to a polarity detecting system for a magnetic head voice coil, which comprises a first electromagnetism electric conversion module, a signal amplifying circuit, a signal comparison circuit and a discrimination module, wherein the first electromagnetism electric conversion m...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The utility model relates to a polarity detecting system for a magnetic head voice coil, which comprises a first electromagnetism electric conversion module, a signal amplifying circuit, a signal comparison circuit and a discrimination module, wherein the first electromagnetism electric conversion module is used for converting a current signal of a first magnetic head voice coil into a polarity electric signal of the first magnetic head voice coil; the signal amplifying circuit is used for amplifying the polarity electric signal; and the discrimination module is used for comparing a forward signal of the amplified polarity electric signal with a backward signal of the amplified polarity electric signal, generating a comparison signal and discriminating the polarity of the first magnetic head voice coil according to the comparison signal. The polarity detecting system for the magnetic head voice coil is designed by adopting an electronic circuit, is convenient for use, adopts a simple detection method, has hig |
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