在晶体管的应用中,我们常常嫌单支晶体管的β(或h_((?)e),h_(21))不够大而采用复合管。但两支以上的晶体管怎样复合比较好?复合管总的性能与单支晶体管的参数之间有什么关系?各种复合管又多用于什么场合?这些问题在采用复合管时是必须了解的。本文将围绕这些问题作些简单的分析。为叙述方便,在下面的叙述中我们均以大写字母 In the application of transistors, we often consider the single-transistor β (or h _ ((?) E), h_ (21)) is not big enough and the use of composite tubes. However, how to composite more than two transistors is better? What is the relationship between the total performance of a composite tube and the parameters of a single transistor? What are the applications of various composite tubes? These problems must be understood when using a composite tube. This article will focus on these issues for some simple analysis. For ease of description, we use capital letters in the following description