This article has analysed the active filterable electric circuit in principle and shown you another one consisted of compound transistor with better effect of filtration.
本文对有源滤波电路作了原理性分析，给出了滤波效果更好的复合晶体管组成的有源滤波电路。
Both the fundamental properties and switching properties of compound switching transistor are discussed. The experimental test data and the practical examples of the application circuit are provided.
本文讨论了复合开关晶体管的基本特性和开关特性，提供了实测数据和应用电路实例。
The principle of PAM PWM compound control and the power transistor AC adjustable speed system based on that principle are presented in this paper.
本文介绍PAM、PWM复合控制原理和按此原理研制的大功率晶体管宽调速交流调速系统。
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