V2EX terminal voltage

Terminal Voltage

定义 Definition

终端电压:指电路元件(如电池、电源、发电机或电路节点)在其端子/接线端上测得的电压,即外部实际“看到”的电压。对有内阻的电源来说,终端电压会随负载电流变化(例如放电时常低于其电动势/开路电压)。

例句 Examples

The terminal voltage of the battery is 12 volts.
电池的终端电压是 12 伏。

As the load current increases, the terminal voltage drops because of the source’s internal resistance.
随着负载电流增大,由于电源内阻的存在,终端电压会下降。

发音 Pronunciation

/tmnl voltd/

词源 Etymology

terminal 源自拉丁语 terminus(“界限、边界”),引申为“末端、端点”,在电学中指“端子/接线端”。
voltage 来自“Volt(伏特)”,以科学家 Alessandro Volta(伏打)命名,表示电势差的大小。因此 terminal voltage 字面义为“端子上的电压”。

相关词 Related Words

文学作品 Literary Works

  • The Art of Electronics(Horowitz & Hill,《电子学的艺术》)在电源、测量与电路建模语境中常用到“terminal voltage”。
  • Microelectronic Circuits(Sedra/Smith,《微电子电路》)讨论电源与偏置、等效电路时会出现该术语。
  • Principles of Electric Circuits(Thomas L. Floyd,《电路原理》)在电源内阻与负载分析章节中常见。
  • Electric Machinery Fundamentals(Stephen J. Chapman,《电机学基础》)涉及发电机/电动机端子量测时常用“terminal voltage”。
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