通过讨论输入失调电流对集成运算放大器输出的影响，推导出集成运算放大器外围阻抗的最佳取值关系。
After discussing how the input offset current influences the output of operational amplifier, the optimal relationship between peripheral impedance is obtained.
本文介绍了电流反馈放大器（CFA）的基本原理，用四个CFA和几个电阻、电容设计了一种三输入单输出的新的通用滤波器。
The fundamental of current feedback amplifiers(CFA) has been introduced. A new universal filter with three inputs and single output using four CFAs and a few of resistors and capacitors is presented.
增加放大器地输入信号会导致输出到阀电磁铁的电流相应的增加。
Increasing the input signal to the amplifier results in a corresponding increase in output current to the valve solenoid.
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