电容传声器阻抗变换器的设计

Internal Amplifier of Condenser Microphones

电容传声器几乎是所有各类传声器中规格品种最多的。介绍了各类电容传声器阻抗变换器的线路原理,包括最简单的ECM阻抗变换器,JFET设计的共漏、共源阻抗变换器,电子管阻抗变换器,RF射频阻抗变换器等,特别介绍了目前在很多国外电容传声器阻抗变换器设计中出现的新设计:变形的跟随器设计。

Among all kinds of microphones, condenser microphone seems to be with the most varies model and type Variouse internal microphone amplifiers used in varies condenser microphones are introduced, including the simplest ECM microphone amplifier, traditional JFET design（common-drain amplifier and common-source amplifier）, vacuum tube microphone amplifier, RF condenser amplifier, etc. The new special JFET design which is neither the traditional common-drain amplifier nor common-source amplifier design is discussed.