英语翻译Transformers 25.1 INTRODUCTIONChapter 12 discussed the s

英语翻译
Transformers
25.1 INTRODUCTION
Chapter 12 discussed the self-inductance of a coil .We shall now examine the mutual inductance that exists between coils of the same or different dimensions .Mutual inductance is a phenomenon basic to the operation of the transformer ,an electrical device used today in almost every field of electrical engineering .This device plays an integral part in power distribution systems and can be found in many electronic circuits and measuring instruments .In this chapter ,we will discuss three of the basic applications of a transformer:to build up or step down the voltage or current ,to act as an impedance matching device ,and to isolate ( no physical connection ) one portion of a circuit from another .In addition ,we will introduce the dot convention and will consider the transformer equivalent circuit .The chapter will conclude with a word about writing mesh equations for a network with mutual inductance .
25.2 MUTUAL INDUCTANCE
A transformer is constructed of two coils placed so that the changing flux developed by one will link the other ,as shown in Fig .25.1 .This will result in an induced voltage across each coil .To distinguish between the coils ,we will apply the transformer convention that the coil to which the source is applied is called the primary ,and the coil to which the load is applied is called the secondary .

变压器
25.1简介
第12章讨论了自我线圈电感.我们现在研究互感之间的相同或不同尺寸线圈存在.互感现象是一个基本的变压器,电气设备使用的几乎所有的电气工程领域的行动于今日.这个装置发挥了配电系统的组成部分,可以找到许多电子电路和测量仪器.在这一章中,我们将讨论一个变压器的基本应用三种：一是建立或下台的电压或电流,作为一个配套设备阻抗行为,从另一个隔离（没有物理连接）的一个部分电路.此外,我们将介绍点公约,并会考虑变压器的等效电路.本章结束时将有关编写与互感网络网方程字.
25.2互感
阿变压器构造的摆放,这样的变化通量一个发达国家将连接另一方面,如图所示两个线圈. 25.1.这将导致在每个线圈感应电压.区分线圈,我们将适用于变压器的惯例,在何种源应用称为初级线圈,以及这种应用的负载称为次级线圈.