从开关利用率的角度，为不同负载电流畸变率情况下选取何种电路进行谐波补偿，提供了理论依据。
From the view of switch utilization ratio, the theory gist is given for employing which circuit in condition with different total harmonic distortion of load current to correct harmonic current.
为提高数字电路实验箱的利用率和可靠性，本文针对数字电路实验箱存在的问题，提出了电源和面板改进方法。
In order to increase the occupying coefficient and reliability of digital experiment boxes, we improve power supply and panel design. The design method and the circuit diagram are presented.
为提高数字电路实验箱的利用率和可靠性，本文针对数字电路实验箱存在的问题，提出了电源和面板改进方法。
In order to increase the occupying coefficient and reliability of digital experiment boxes, we improve power supply and panel design. The design method and the circuit diagram are presented.
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