| 摘要 |
A position sensor (10) includes a capacitive position transducer (14) in series with an inductor. A generator (30) applies a current to the series combination at the resonant frequency thereof and the voltage across the capacitor provides an indication of the sensed position. The series resonance provides a filtering function essentially removing harmonics of the resonance frequency. It also boosts the voltage across the capacitor, thereby increasing the sensitivity of the sensor.
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