| 摘要 |
PURPOSE: An ultrasound system is provided to generate a bias voltage used in an ultrasound transmitter by using a negative high voltage or positive high voltage. CONSTITUTION: An ultrasound system includes an ultrasound transmitter(110), a plurality of high voltage generators, and a bias voltage transmitter(130). An ultrasound transmitter generates a waveform for a probe(140). The plurality of high voltage generators generate the negative high voltage and the positive high voltage with different sizes. The bias voltage transmitter generates a bias voltage by controlling one of the negative high voltage and the positive high voltage through a charging pump circuit.
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