| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultrasonic probe capable of preventing increase of a circuit scale and achieving miniaturization and weight reduction.SOLUTION: An ultrasonic probe 1 includes: a vibrator 3; a preamplifier 4 whose input side is connected to the vibrator side and output side is connected to the side of a transmission/reception part 2 for transmitting and receiving transmission signals and reception signals; a transmission bypass part 7 connected between the transmission/reception part and the vibrator, for making the transmission signals pass through and shutting off the reception signals; and a floating part 31 connected between the power supply terminal of the preamplifier and a first power supply, for turning the bias potential of the preamplifier to an electrically floating state when the transmission signals are transmitted, and turning the bias potential to an electrically non-floating state when the reception signals are received. |
