发明名称 |
HEAD TRANSDUCER WITH MULTIPLE RESISTANCE TEMPERATURE SENSORS FOR HEAD-MEDIUM SPACING AND CONTACT DETECTION |
摘要 |
A sensor supported by a head transducer has a temperature coefficient of resistance (TCR) and a sensor resistance. The sensor operates at a temperature above ambient and is responsive to changes in sensor-medium spacing. Conductive contacts connected to the sensor have a contact resistance and a cross-sectional area adjacent to the sensor larger than that of the sensor, such that the contact resistance is small relative to the sensor resistance and negligibly contributes to a signal generated by the sensor. A multiplicity of head transducers each support a TCR sensor and a power source can supply bias power to each sensor of each head to maintain each sensor at a fixed temperature above an ambient temperature in the presence of heat transfer changes impacting the sensors. A TCR sensor of a head transducer can include a track-oriented TCR sensor wire for sensing one or both of asperities of the medium. |
申请公布号 |
KR20140124010(A) |
申请公布日期 |
2014.10.23 |
申请号 |
KR20147025976 |
申请日期 |
2011.11.17 |
申请人 |
SEAGATE TECHNOLOGY LLC |
发明人 |
JOHNSON MICHAEL T.;LIU DONGMING;LOU HUAZHOU;KUNKEL GARY J.;MACKEN DECLAN;STOEBE TIMOTHY W.;ZHENG XUAN |
分类号 |
G11B5/60 |
主分类号 |
G11B5/60 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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