发明名称 |
PRESSURE DETECTION CONVERTER CIRCUIT |
摘要 |
<p>This relates to a circuit for delivering a linear voltage (VP) which is inversely proportional to the capacitance of a pressure sensitive capacitive transducer. A constant current IO is alternately switched into a reference capacitor (CR) and the transducer capacitor (CP). When the voltage across CP reaches VP, a flip-flop is toggled to direct current to CR. When the voltage across CR reaches a reference voltage (VR), the flip-flop is again toggled directing current to CP. A duty cycle detector charges integrator capacitors until the feedback voltage VP is such as to render equal the charging times of CP and CR.</p> |
申请公布号 |
JPS55142251(A) |
申请公布日期 |
1980.11.06 |
申请号 |
JP19800051576 |
申请日期 |
1980.04.18 |
申请人 |
MOTOROLA INC |
发明人 |
RANDAARU CHIYAARUZU GUREI;UIRUSON DEBITSUDO PEESU |
分类号 |
G01R27/26;G01D5/24;G01L9/12 |
主分类号 |
G01R27/26 |
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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