Patent ID: 8934272
Filing Date: 2015-01-13
Classification: B06B,G01S,Y10T

Abstract:
1. An ultrasonic image display apparatus power circuit comprising: a high-voltage fixed power supply portion configured to boost a voltage of a low-voltage power supply and generate positive and negative voltages; a bias voltage output portion connected to said high-voltage fixed power supply portion and configured to output a bias voltage to a switch configured to switch an ultrasonic transducer configured to transmit and receive an ultrasonic wave; a transmission power supply portion connected to said high-voltage fixed power supply portion, said transmission power supply portion configured to supply transmission power for the ultrasonic wave to the ultrasonic transducer and configured to regenerate the transmission power as regeneration power to said high-voltage fixed power supply portion, said transmission power supply portion configured to supply power to both the ultrasonic transducer and said high-voltage fixed power supply portion, said transmission power supply portion comprising a synchronous buck circuit that comprises a positive-side synchronous buck circuit configured to generate positive transmission voltages and a negative-side synchronous buck circuit configured to generate negative transmission voltages; and a regenerative electric power storage portion provided between said high-voltage fixed power supply portion and said transmission power supply portion and configured to store regeneration power from said transmission power supply portion, said regenerative electric power storage portion comprising a positive-side regenerative electric power storage portion configured to store regeneration power from said positive-side synchronous buck circuit and a negative-side regenerative electric power storage portion configured to store regeneration power from said negative-side synchronous buck circuit.