Sensor device
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United States of America Patent
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Oct 15, 2019
Grant Date -
Aug 10, 2017
app pub date -
Sep 16, 2014
filing date -
Sep 16, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
Provided is a sensor device wherein malfunction due to a negative surge is suppressed. This sensor device is provided with: a sensor element wherein electrical characteristics change corresponding to physical quantities; a signal processing circuit that processes output signals of the sensor element; a first transistor element that supplies currents to the sensor element and the signal processing circuit; a control circuit that controls a base current of the first transistor element; a power supply terminal; and a ground terminal. The sensor device is characterized in that the control circuit is provided with a limiting section that limits a current flowing from the ground terminal toward a base terminal of the first transistor element.
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