... master contrast control 对比度主控器 master level control 主电平控制 Master TimeR Control Block 主定时器控制块 ...
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随后，本文给出了380V电源供电的二电平变频加热电源的主电路和控制电路的设计与实现。
Secondly, the paper designs and realizes the two level variable frequency heating power supply with line of 380V.
然后分别介绍控制电路和主电路设计原理与思路，重点论述了混合电平逻辑设计中的接口解决方案、A/D采样电路、SPI通讯接口电路及主电路的保护等；
The key points lies in interface resolve method in hybrid voltage-logic design, A/D sampling circuit, SPI communication port and the protect of the main circuit.
该系统主电路采用三电平PWM变频器，以16位单片机80 98为核心组成数字控制系统，并采用空间电压矢量法的控制方法。
The device uses three-level PWM transducer as the main electric circuit of the system, 16 bits CPU 8098 as the the core of the digital control system.
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