| 摘要 |
PROBLEM TO BE SOLVED: To speed up switching of power sources used for current amplification. SOLUTION: The drive signal generating apparatus has: an analog signal converter; an current amplifier; and a power generator. The analog signal converter converts digital data into an analog signal; the current amplifier has a transistor for current amplification, and generates a drive signal by amplifying the current of the analog signal with a transistor for current amplification; and the power generator generates a power source for a voltage determined based on the digital data, and to be supplied to the transistor for current amplification. COPYRIGHT: (C)2009,JPO&INPIT
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