电子商务的成功实现需要信息流全和物 流的畅通。本章将介绍解决电子商务资金流 题的支付技术,包括电子支付、电子货币的基通 本概念,几种电子支付方式、工具和电子支付 模式

8.1间接交流变流电路 8.2间接直流变流电路

l. What is power electronics? ll. The history lll. Applications V. A simple example lV. About this course

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

Supplement Practical Application Issues of Power Semiconductor Devices and d Gate Triggering Control Circuit for Thyristor Rectifiers

The concept of composite converter Composite converter Combination of two or more converters in cascaded connection Indirect ac to ac converters (AC-DC-AC converters) Composite converters ndirect dc to dc converters

1．安全气囊系统的作用和种类 2．安全气囊系统的组成和原理 3. 安全气囊系统的工作过程

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

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

3.1基本斩波电路 3.2复合斩波电路和多相多重斩波电路