 数据通信系统的构成 远动信息编码的基本理论 几种常用的抗干扰编码 数据传输规约 MODBUS规约简介 小结

7.1 Basic concepts on soft-switching 7.2 Classification of soft-switching- techniques 7.3 Typical soft-switching circuits and techniques

6.1 Basic principles 6.2 Some major PWM techniques in DC/AC inverters 6.3 PWM techniques with feedback control 6.4 PWM rectifiers

Applications of Inverters Conversion of electric power from DC type energy sources to AC type load -Battery Photovoltaic cell (Solar cell) Fuel cell +As a part of composite converter AC-DC-AC frequency converter(for AC motor drive) AC-DC-AC constant-voltage constant-frequency converter(for uninterruptable power supplies)

PEREC Classification of ac to Ac converters Same frequency Variable variable magnitude AC power frequency AC power AC power AC controllers Frequency converters

一、晶体管的开关特性 二、TTL集成逻辑门 三、·CMOS电路

3.1 Basic DC to DC converters 3.1.1 Buck converter(Step-down converter) 3.1.2 Boost converter(Step-up converter) 3.1.3 Buck-Boost converter(Step-downstep-up converter)and Cuk converter 3.1.4 Sepic converter and Zeta converter 3.2 Composite DC/DC converters and connection of multiple DC/DC converters 3.2.1 A current-reversible chopper 3.2.2 Bridge chopper (H-bridge DC/DC converter) 3.2.3 Multi-phase multi-channel DC/DC converters

一、电影的外部结构 二、摄影机的基本镜头方式 三、组织电影的世界

第一节 电影的发明 第二节 影像发现：记录与叙事 第三节 电影表现力的发现

一、电影的类型 二、电影的风格