电工电子学第七版下册《现代电子技术》作为电子信息领域的核心教材，系统构建了从半导体器件到现代电子系统的知识框架。本书以“器件-电路-系统”为逻辑主线，将理论分析与工程实践紧密结合，突出表现为三大特点：其一，内容覆盖全面，涵盖半导体物理基础、模拟/数字电路原理及现代电子技术应用；其二，注重技术演进脉络，通过分立元件到集成电路的递进式讲解，揭示电子技术发展规律；其三，强调工程实用性，包含大量实测数据、典型电路参数及设计案例。特别在现代电子技术章节，教材深度融合传统电路理论与智能硬件技术，通过ADC/DAC接口、可编程逻辑器件等模块，架起通向物联网、智能硬件的桥梁。其知识体系既保留经典电路分析方法，又纳入SPICE仿真、EDA设计等现代工具应用，充分体现学科交叉特征。
第八章 半导体器件基础
本章构建了现代电子技术的物质基础认知体系，重点解析PN结、二极管、双极型晶体管（BJT）和场效应管（FET）的物理机制与伏安特性。
| 器件类型 | 导电机理 | 驱动方式 | 主要参数 |
|---|
| 普通二极管 | PN结单向导电 | 正向电压驱动 | 最大整流电流、反向耐压 |
| 稳压二极管 | 齐纳击穿效应 | 反向电压驱动 | 稳定电压、动态电阻 |
| BJT | 载流子扩散运动 | 基极电流控制 | β值、fT、ICBO |
| MOSFET | 电场调控导电沟道 | 栅极电压控制 | 开启电压、跨导、IDSS |
第九章 放大电路与集成运算放大器
本章建立了信号处理的核心理论，重点分析三种基本组态放大电路的性能指标，并系统阐述集成运放的工作原理与应用电路设计方法。
| 电路组态 | 电压增益 | 输入阻抗 | 输出阻抗 |
|---|
| 共射放大电路 | -βRL/rbe | rbe | RCE |
| 共集放大电路 | ≤1 | ∞ | RCE |
| 共基放大电路 | +βRL/rbe | rbe | <RC |
集成运放典型参数对比
| 参数类型 | 通用型 | 高精度型 | 高速型 |
|---|
| 开环增益(dB) | 80-100 | 140+ | 80-100 |
| 共模抑制比(dB) | 80-90 | 120+ | 60-80 |
| 单位增益带宽(MHz) | 1-3 | 2-5 | 10+ |
| 转换速率(V/μs) | 0.5-1 | 1-5 | 50+ |
第十章 反馈与振荡电路
本章通过负反馈理论建立系统稳定性分析方法，重点推导四种反馈组态对电路性能的改善作用，并对比文氏桥、LC三点式等振荡电路的设计与应用场景。
- 负反馈对放大器性能影响：增益下降（1+AF）倍，输入阻抗提高（1+AF）倍，输出阻抗降低（1+AF）倍，非线性失真减少（1+AF）倍
- 振荡器相位平衡条件：φA+φF=2nπ（n为整数），幅度平衡条件：|AF|=1
| 电路类型 | 频率稳定度 | 振幅调节方式 |
|---|
| RC文氏桥 | 较低（≤0.1%） |
-5）
|
<H3{第十一章 功率电子技术}<p{本章聚焦电力转换系统的核心器件，通过对比不同功率器件的特性参数，建立电力电子装置的设计分析能力。}
<H3{第十二章 数字电路基础}</H3{
<p{本章构建数字系统的理论基石，重点解析TTL/CMOS逻辑门特性、组合逻辑设计方法及触发器工作原理。}</p{DD<H3{第十三章 现代电子技术应用}</H3{
<p{本章融合数模混合系统设计方法，重点解析ADC/DAC接口电路、单片机最小系统及FPGA开发流程。}</p{
<ul{
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- [ BEHAVIOR ] Run Closure @app_init [ RunTime:0.000042s ]
- [ CACHE ] INIT File
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'type' => 'method',
'method' =>
array (
0 => '\\think\\addons\\Route',
1 => 'execute',
),
'var' =>
array (
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)
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1 => 'user',
2 => 'site',
3 => '__CHANNEL__',
4 => 'isWechat',
5 => '__ARCHIVES__',
6 => 'schoolName',
7 => 'schoolAside',
8 => 'page_type',
9 => 'resultData',
) ]
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