| 摘要 |
<p>PURPOSE: An ultrasonic image display apparatus and a power circuit thereof are provided to prevent unnecessary consumption of power and protect a circuit from voltage breakdown. CONSTITUTION: A high-voltage setting power unit(2) boosts the voltage of low-voltage power and creates positive and negative voltages. A bias voltage output unit(3) is connected to the high-voltage setting power unit and switches an ultrasonic transducer for transmitting and receiving ultrasonic waves to output a bias voltage to a switch. A transmission power unit(4) is connected to the high-voltage setting power unit, supplies transmission power for ultrasonic waves to the ultrasonic transducer, and regenerates the transmission power for the high-voltage setting power unit. A regenerated power storage unit(5) is provided between the high-voltage setting power unit and the transmission power unit and stores the regenerated power from the transmission power unit.</p> |
