Two circuits are dual if the mesh equations that characterize one of them have the same mathematical form as nodal equations that characterize the other

The displacement current flowing internally between the capacitor plates is exactly equal to the conduction current flowing in the capacitor leads

A current-carrying conductor produced a magnetic field (1800). A changing magnetic field could induce a voltage in a neighboring circuit(1820)

Let=R3 and The result we have found for two /R =k, we have inputs may be extended to any v2=-k(v1+3) number of inputs

一、数控系统主要部件 数控控制器 伺服（主轴）放大器、电机（反馈） I/O装置 机床

The voltage follower is a circuit in which the output is identical to the input

3.1 电容式传感器的原理与结构 3.2 电容式传感器的测量电路 3.3 电容式传感器的应用

华中科技大学：《模拟电子技术》教学资源（一）6.1 集成运算放大器——恒流源电路

• 直流偏置电路 • 静态工作点 • FET小信号模型 • 动态指标分析 • 三种基本放大电路的性能比较 4.4.1 FET的直流偏置及静态分析 4.4.2 FET放大电路的小信号模型分析法

华中科技大学：《模拟电子技术》教学资源（一）4.2 场效应管放大电路——砷化镓金属-半导体场效应管