Patent ID: 7351204

Claim:
An ultrasonic diagnostic apparatus for transmitting ultrasonic signals from ultrasonic transducers toward a subject to be examined, and receiving reflected waves of said ultrasonic signals for display, said ultrasonic diagnostic apparatus comprising: an analog switch for switching ultrasonic transducers for transmission of said ultrasonic signals and reception of said reflected waves; a transmitter power source comprising a regulator circuit coupled to a power source for supplying a high voltage to a transmitter circuit for causing said transmitter circuit to drive said ultrasonic transducers, said regulator circuit comprising a capacitor, a diode, a resistor, a first inductor, and a second inductor, wherein the first and second inductors are configured such that the first inductor induces a voltage in the second inductor; and a bias power source generating circuit for generating a bias power source for said analog switch from said transmitter power source.