发明名称 |
Oscillating reed electric motors |
摘要 |
An electric motor of the kind in which an oscillating element carries a magnet which is coupled magnetically to a rotor to transmit drive thereto. The electrical driving signals for the oscillating element, derived for example from a divided-down quartz crystal oscillator, have a frequency f which is f/2Q less than the natural resonant frequency of the oscillating element, where Q is the Q factor of the element, to maintain drive of the latter for all variations in natural frequency due to ambient changes.
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申请公布号 |
US4056743(A) |
申请公布日期 |
1977.11.01 |
申请号 |
US19750629611 |
申请日期 |
1975.11.06 |
申请人 |
HORSTMANN CLIFFORD MAGNETICS LTD. |
发明人 |
CLIFFORD, CECIL FRANK;FINLAYSON, LAURENCE HARRY |
分类号 |
H02K7/07;G04C5/00;H01L41/09;H02K7/065;H02K33/06;H02K49/10;(IPC1-7):H02K33/00 |
主分类号 |
H02K7/07 |
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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