发明名称 |
Sinusoidal signal generating circuit providing small phase difference with respect to reference signal and apparatus for driving oscillating element with circuit |
摘要 |
A sinusoidal signal generating circuit for ensuring a small phase difference with respect to a reference signal is provided. The sinusoidal signal generating circuit comprises a capacitor for charging/discharging, a charging unit for charging a predetermined current to the capacitor, and a discharging unit for discharging a current therefrom, whereby an output signal is produced by the change in the potential of the capacitor, wherein the charging unit comprises a charging current adjusting unit for adjusting the magnitude of the charging current, and the discharging unit comprises a discharging current adjusting unit for adjusting the magnitude of the discharging current, and a control signal generating means is provided for supplying a plurality of control signals to the charging current adjusting unit and the discharging current adjusting unit in such a manner that the potential of the capacitor is changed into a sinusoidal waveform. The sinusoidal signal generating circuit can be employed as a dividing means and a driving means in an apparatus for driving a vibrating element.
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申请公布号 |
US2002118051(A1) |
申请公布日期 |
2002.08.29 |
申请号 |
US20010966573 |
申请日期 |
2001.09.26 |
申请人 |
ALPS ELECTRIC CO., LTD.;SANYO ELECTRIC CO |
发明人 |
SUZUKI HIROHISA;NISHIMURA MASAAKI;HASEGAWA KAZUO;TAKAI DAISUKE |
分类号 |
G01P9/04;G01C19/56;H03B28/00;(IPC1-7):H03K12/00 |
主分类号 |
G01P9/04 |
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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