发明名称 |
AGC CIRCUIT FOR THE REDUCTION OF HARMONICS IN THE DRIVE SIGNAL |
摘要 |
A drive circuit apparatus for use in generating a drive signal for energizing an actuator about a natural resonant frequency is disclosed. The circuit has a counter that generates a count sequence derived from a drive sense signal. Additionally, a demodulator is further coupled to the counter and generates a voltage level signal from the drive sense signal based on the count sequence. A digital to analog (D/A) converter is coupled to both the counter and demodulator. The D/A converter generates the drive signal in a substantially constant phase relationship with respect to the drive sense signal as derived from the voltage level signal and based on the count sequence. In addition, a method of generating a drive signal for energizing an actuator about a natural resonant frequency is provided. |
申请公布号 |
WO2007011454(A3) |
申请公布日期 |
2007.03.22 |
申请号 |
WO2006US20491 |
申请日期 |
2006.05.25 |
申请人 |
WATSON INDUSTRIES, INC.;WATSON, WILLIAM, S. |
发明人 |
WATSON, WILLIAM, S. |
分类号 |
H03L7/06 |
主分类号 |
H03L7/06 |
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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