| 摘要 |
PROBLEM TO BE SOLVED: To provide a buzzer driver which can improve quality by making it possible to automatically efficiently carrying out work to regulate the sound pressure of a buzzer and can prevent an increase of a manufacturing cost by improving productivity. SOLUTION: This buzzer driver has an inspection apparatus control section 3 which stores frequency signals of plural patterns and drives the buzzer by outputting the frequency signal of the arbitrary pattern among the frequency signals and a sound pressure measuring microphone 7 which measures the sound pressure of the buzzer driven by the inspection apparatus control section 3. The buzzer driver is so constituted as to drive the buzzer by the frequency signals of the plural patterns before the sound pressure level of the buzzer is judged to be an optimum level in accordance with the measurement results measured by a microphone 7.
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