一、带电粒子在电场和磁场中所受的力 二、带电粒子在磁场中运动举例

从点A出发 , 顺时针 绕行一周各部分电势降 落总和为零

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

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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)

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