【摘要】 介绍了运算放大器输入电路的系数电位器及其上、下电阻配置的理论探讨，推导出四种不同状况下的计算公式，并提供了部分实例。更多还原

【Abstract】 The coefficient electric positioner and its upper,lower resistance placement in inputing circuit of calculating amplifier is introduced. The calculating formulas for four different states and some examples are supplied.更多还原