Drive circuit, vibrator device, electronic apparatus, and moving object
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United States of America Patent
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Jun 5, 2018
Issued Date -
Sep 22, 2016
app pub date -
Mar 15, 2016
filing date -
Mar 17, 2015
priority date (Note) -
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Abstract
A drive circuit includes a circuit for feedback oscillation connected to a vibrator to form a feedback oscillation circuit and including a high-pass filter, an oscillation circuit that outputs a periodic signal, and a control circuit that controls whether or not the periodic signal output by the oscillation circuit is supplied to the circuit for feedback oscillation under a condition that the feedback oscillation circuit operates, and controls to bring a state between a first node as an output node and a second node grounded of the high-pass filter into a non-conduction state when the periodic signal is supplied to the circuit for feedback oscillation and bring the state between the first node and the second node into a conduction state when the periodic signal is not supplied to the circuit for feedback oscillation.
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