发明名称 |
GAIN SWITCHING DEVICE FOR WATT-METER |
摘要 |
A gain switching apparatus for a signal is controlled by a switching function formed as a function of the signal. The apparatus is provided with a circuit for reducing errors due to common frequency components in the switching function and in the signal being switched thereby. In order to reduce DC error resulting from multiplication of the switching function by a parameter representing the switched signal, the common frequency component of the switching function is substantially eliminated and replaced by a component at a frequency which is a multiple of the common frequency. A simplified logic circuit is provided to perform the frequency multiplication and the resultant error reduction. |
申请公布号 |
AU7347387(A) |
申请公布日期 |
1987.09.17 |
申请号 |
AU19870073473 |
申请日期 |
1987.05.27 |
申请人 |
SANGAMO WESTON, INC., |
发明人 |
BRUCE E. RANDALL;JAY K. MARSHALL |
分类号 |
G01R21/133;G01R15/09;G01R21/00;H03K17/00;H03M1/12 |
主分类号 |
G01R21/133 |
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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