| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultrasonic vibrator driving circuit outputting a plurality of levels of voltage, which little consumes electric power and is inexpensive, and an ultrasonograph equipped with such the ultrasonic vibrator driving circuit as this.SOLUTION: The ultrasonograph has an output line 20 connected to an ultrasonic vibrator E, a P side switching circuit portion 21 having a plurality of switching circuits and an N side switching circuit portion 22 having a plurality of switching circuits, a P side active gland clamping circuit portion 23 having a plurality of active gland clamping circuits and an N side active gland clamping circuit portion 24. Characteristically, the impedances of the respective switching circuits are different and the impedances of the gland clamping circuits are different. |
