| 摘要 |
PURPOSE: A power source control apparatus is provided to maintain a constant DC output voltage and perform functions including output control, soft start, input voltage amplification, and over current cut-off by using a micro computer. CONSTITUTION: A power source control apparatus comprises a sensing unit(20), a micro computer(8), a pulse width control unit(60), and a power varying and rectifying unit(50). The sensing unit senses and outputs voltage and current from the DC power finally input to an ultrasonic amplifier unit(200). The micro computer receives a control signal from an ultrasonic controller(100), receives voltage and current values of the power input to the ultrasonic amplifier unit from the sensing unit, and outputs a control signal for supplying power to the ultrasonic amplifier unit and inputting constant voltage to the ultrasonic amplifier unit regardless of loads in accordance with the control signal of the ultrasonic controller.
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