发明名称 |
Drive circuit for controlling a movable magnetic head |
摘要 |
An improved drive circuitry for controlling the deflection of a bimorph comprising a pair of electrically poled piezo-ceramic elements bonded to a common substrate is disclosed which applies deflection voltage in a manner whereby the polarity is always in the poling direction of each of the elements so that depolarization of the piezo-ceramic elements does not occur. The circuitry applies a common polarity D. C. biasing voltage to both of the piezo-ceramic elements of the bimorph and also applies oppositely phased A. C. deflection signals to the respective piezo-ceramic elements.
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申请公布号 |
US4169276(A) |
申请公布日期 |
1979.09.25 |
申请号 |
US19770842470 |
申请日期 |
1977.10.17 |
申请人 |
AMPEX CORPORATION |
发明人 |
RODAL, DAVID R. |
分类号 |
H04R17/00;G11B3/12;G11B5/588;G11B5/592;H01L41/04;H01L41/09;H02N2/00;H02N2/06;H04N5/7826;(IPC1-7):G11B5/52;G11B21/10;G11B21/18 |
主分类号 |
H04R17/00 |
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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