Oscillator circuit for a sensor
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United States of America Patent
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Jul 14, 2009
Grant Date -
Jan 19, 2006
app pub date -
Jul 14, 2005
filing date -
Jul 14, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
An oscillator circuit for a sensor, with a tuned circuit and an operational amplifier, the electrical oscillation of the tuned circuit is capable of being tapped between a first terminal and a second terminal of the tuned circuit, and the first terminal of the tuned circuit being connected to the noninverting input of the operational amplifier and the output of the operational amplifier is fed back to the noninverting input of the operational amplifier. The oscillator circuit is designed to improve the dynamic behavior of the oscillator circuit by the second terminal of the tuned circuit —at least in terms of AC voltage —being directly connected to the inverting input of the operational amplifier.
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