发明名称 |
RMS converters |
摘要 |
An RMS converter has first and second transistors (40a and 42a) providing a signal representing double the log of the input voltage, a third transistor (40b), matched with the first (40a), providing a signal representative of the log of the output voltage and a fourth transistor (42b), matched with the second (42a). providing a signal representative of the anti-log of the ratio of those signals; the transistors in each matched pair are repetitively interchanged functionally thereby reducing errors caused by slight differences in the transistor operating characteristics.
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申请公布号 |
US4575649(A) |
申请公布日期 |
1986.03.11 |
申请号 |
US19840632365 |
申请日期 |
1984.07.19 |
申请人 |
SCHLUMBERGER ELECTRONICS (U.K.) LIMITED |
发明人 |
GARDINER, WILLIAM H.;LUCKHURST, GEOFFREY A. |
分类号 |
G01R19/02;G06G7/20;G06G7/24;(IPC1-7):H03K5/00 |
主分类号 |
G01R19/02 |
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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