发明名称 |
LINEAR CAPACITIVE PRESSURE TRANSDUCER SYSTEM |
摘要 |
A capacitive pressure transducer system includes a reference capacitor and a capacitor which varies with pressure; and circuitry which involves alternately charging one of the capacitors to a reference voltage level, and then switching to charge the other capacitor; and circuitry for producing an output voltage which varies as the duty cycles of the two capacitors shift; and the output is therefore substantially proportional to the pressure changes. Feedback is provided to incrementally change the capacitor charging and switching timing or duty cycles by changing the charging current or the reference voltage at which switching occurs, to substantially eliminate deviations from linearity in the voltage versus pressure characteristic. |
申请公布号 |
GB2102959(A) |
申请公布日期 |
1983.02.09 |
申请号 |
GB19820017795 |
申请日期 |
1982.06.18 |
申请人 |
* KAVLICO CORPORATION |
发明人 |
KYONG MAN * PARK;CHEN YI * LEE |
分类号 |
G01D5/24;G01L9/12;G01R27/26;(IPC1-7):01L9/12 |
主分类号 |
G01D5/24 |
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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