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本文讨论了含闭合回路电阻检测的保护测量原理及线路,给出了几组实测数据以说明原理线路的可行性;讨论了R-2R梯形电阻网络DAC电阻检测的一些问题。
In this paper, the principle and circuit of protection measurement with closed-loop resistance detection are discussed. Several groups of measured data are given to illustrate the feasibility of the principle circuit. Some problems of DAC resistance detection of R-2R ladder resistor network are discussed.