The principle of the SCR adjusting voltage circuit and the starting model of soft starter are introduced. The voltage adjusting model SCR is used in this paper.

介绍了晶闸管调压电路的原理以及目前软起动器的起动方式，本文采用晶闸管调压方式。

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The self-adaptable control of output voltage could be realized under certain range by adding a APFC in ultrasonic generator and adjusting voltage feedback network with digital potentiometers.

本文在超声发生器中加入功率因数校正电路（APFC），并利用单片机控制数字电位器实现了对电压反馈网络的调节，从而实现APFC输出电压在一定范围内的自适应控制。

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It also introduces the working principle of the SCR adjusting voltage circuit and the starter's main circuit, the hardware structure and functions of the soft starter and the software program design.

阐述了晶闸管调压电路及软起动器主电路的工作原理、软起动器的硬件结构和功能以及软件设计。

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And consumption is further reduced by adjusting the operating speed and voltage of the chip on the fly, depending on the user's activity.

ECONOMIST: Transmetamorphosis