V2EX common-emitter

Common-Emitter

定义 Definition

common-emitter(共射极):在双极型晶体管(BJT)放大电路中,把发射极作为输入与输出的共同参考端(通常接地或交流接地)的一种基本接法。常见形式包括共射极放大器,特点是电压增益较高、输入与输出相位反转(约 180°)
(该词也常用于更广义的“共射极配置/结构”。)

发音 Pronunciation (IPA)

/kmn mtr/

例句 Examples

A common-emitter amplifier can provide a large voltage gain.
共射极放大器可以提供较大的电压增益。

In the common-emitter configuration, the output voltage is inverted relative to the input, so feedback design must account for the 180-degree phase shift.
在共射极结构中,输出电压相对于输入会反相,因此做反馈设计时必须考虑约 180° 的相位差。

词源 Etymology

common- 表示“共同的、共用的”,emitter 来自拉丁语 emitters/emit 的词根,意为“发出、发射”。在晶体管术语中,emitter(发射极)指载流子“发射/注入”的电极;“common-emitter”因此直译为“发射极为公共端的连接方式”。

相关词 Related Words

文学与著作 Literary Works

  • The Art of Electronics(Horowitz & Hill)以共射极为核心例子讲解 BJT 放大与偏置设计。
  • Microelectronic Circuits(Sedra & Smith,《微电子电路》)系统讨论共射极小信号模型、增益与频率响应。
  • Electronic Devices and Circuit Theory(Boylestad & Nashelsky)在晶体管放大电路章节中反复使用 common-emitter 术语与示意图。
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