发明名称 |
Series resonant drive circuit for magnetic bubble memory |
摘要 |
A series resonant drive circuit for a magnetic bubble memory includes X- and Y-coils arranged orthogonally to each other for generating a rotating magnetic field applied to a magnetic bubble memory chip, resonance capacitors each connected to a corresponding one of the X- and Y-coils for forming a series resonance circuit with the corresponding coil at a frequency of the rotating magnetic field, power supplies each connected to a corresponding one of the resonance circuits, and an inductance device connected in series with both of the resonance circuits and a capacitance device connected between the resonance circuits to compensate a mutual inductance due to the inductive coupling between the X- and Y-coils and a capacitance due to the capacitive coupling between the X- and Y-coils. Further, the temperature coefficient of the capacitance device is selected so that the temperature coefficients of the mutual inductance and capacitance between the coils can be compensated.
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申请公布号 |
US4430729(A) |
申请公布日期 |
1984.02.07 |
申请号 |
US19820416043 |
申请日期 |
1982.09.08 |
申请人 |
HITACHI, LTD. |
发明人 |
TOYOOKA, TAKASHI;AOKI, HIROKAZU;SUGIE, MAMORU;YOSHIZAWA, SHIGERU |
分类号 |
G11C11/14;G11C19/08;(IPC1-7):G11C19/08 |
主分类号 |
G11C11/14 |
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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