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一、前言在音频放大器爱好者中间,电子三极管放大器还是颇受欢迎的,想要重新估价电子管的音质、音色的人也正在多起来。重新估价电子三极管时,在特性方面,它具有失真小,输入阻抗高,输出阻抗低等优点。在放大器的设计和提高放大器性能等方面,它具备了许多好的特性。但对电子管而言,它又有不少缺点。从其外形和构造上来看,体积大且易损坏;管内有灯丝,这一点是很讨厌的;另外,还有寿命短,容易产生交流声等问题。目前的晶体管放大器,使用的是NPN和PNP晶体管,在其电路结构上,全段直耦式纯互补电路还是很罕见的。不过,在双极晶体管中,存在着自由电荷积累效应引起的切割失真等固有的问题,它们会成为高次谐波失真的原因。
First, the foreword Among the audio amplifier enthusiasts, the electronic transistor amplifier is still very popular, you want to re-evaluate the sound quality of the tube, sound people are also up. Revaluation of the electronic transistor, the characteristics, it has a small distortion, high input impedance, low output impedance. It has many good features in amplifier design and amplifier performance. But for the tube, it has a lot of shortcomings. From its appearance and structure point of view, bulky and easily damaged; tube filament, which is very annoying; In addition, there are short life, easy to produce hum and other issues. The current transistor amplifier, using NPN and PNP transistors, in its circuit structure, the entire straight-coupled pure complementary circuit is still very rare. However, in bipolar transistors, there are inherent problems such as cutting distortion caused by the free-charge accumulation effect, and they cause harmonic distortion.