Patent ID: 7965001

Claim:
A drive control device for an oscillator, which generates a predetermined switching pattern by operating a switching element, and supplies an oscillation generation unit of an oscillator with drive electric power for generating predetermined oscillation frequency and amplitude according to the switching pattern, the oscillator drive control device at least comprising: a voltage detection circuit for always monitoring and detecting a power supply voltage unique to a delivery destination of the oscillator; a memory circuit storing, in advance, a basic switching pattern adapted to an arbitrarily set reference voltage, and used for driving the oscillation generation unit at proper oscillation frequency and amplitude; and an arithmetic processing circuit for calculating a ratio of the detected voltage unique to the delivery destination detected by the voltage detection circuit to the reference voltage, and calculating a switching pattern substantially the same as the basic switching pattern under an environment of the power supply voltage unique to the delivery destination by multiplying a pulse width, which represents ON/OFF timings of the basic switching pattern, by an inverse of the ratio.