为单端恒电位仪所能检测范围小的问题,设计了一种全差分恒电位仪电路。通过与单端恒电位仪的对比分析以及在电化学工作站进行循环伏安法测试实验,分析和实验结果表明了所设计的差分恒电位仪不仅能满足自动恒定电位的要求,在同样供电电源条件下,全差分型恒电位仪的信号摆幅几乎是标准单端型恒电位仪的两倍,极大增大了检测范围。另外,该设计有效抑制了电路的共模噪声。 For single-ended potentiostat can detect a small range of problems, designed a fully differential potentiostat circuit. Through the comparison with the single-end potentiostat and the cyclic voltammetry test at the electrochemical workstation, the analysis and experimental results show that the designed differential potentiostat can not only meet the requirements of automatic constant potential, Under the whole differential type potentiostat signal swing is almost double the standard single-ended potentiostat, which greatly increased the detection range. In addition, the design effectively suppresses the common mode noise of the circuit.