| 摘要 |
<p>For the purpose of reducing the size and power consumption of a power source in an ultrasonic diagnostic apparatus, charge pump circuits (50 and 60) are connected to a transmitter power source (14). A regulator in the transmitter power source (14) drives the charge pump circuit (50) to generate a positive bias voltage +HV2 higher than a positive voltage +HV1 generated by the transmitter power source (14). The regulator in the transmitter power source (14) also drives the charge pump circuit (60) to generate a negative bias voltage -HV2 lower than a negative voltage -HV1 generated by the transmitter power source (14). <IMAGE></p> |
