Patent ID: 9746326
Date: 2017-08-29
CPC Classifications: G01C

Claim:
1. A driver apparatus comprising: a vibrator configured to vibrate in response to a drive signal input thereto, and to output a monitor signal in accordance with a vibration thereof; and a drive circuit configured to input the drive signal to the vibrator to vibrate the vibrator, wherein the drive circuit includes: an input amplifier configured to amplify the monitor signal and output the amplified monitor signal; an AGC circuit unit has a gain automatically adjusted based on the signal output from the input amplifier; an output amplifier configured to receive the drive signal and output the drive signal to the vibrator; a power supply unit configured to supply a power supply voltage; a power supply voltage controller configured to boost the power supply voltage, and to supply the boosted power supply voltage to the output amplifier; and a temperature detector configured to detect a temperature, wherein the power supply voltage controller is configured to output, to the output amplifier, one of a boosted voltage obtained by boosting the power supply voltage and the power supply voltage selectively in response to the temperature.