V2EX capacitor

Capacitor

释义 Definition

capacitor(电容器):一种电子元件,用来储存电荷与电能,并在电路中按需要释放;常用于滤波、耦合/去耦、定时与能量缓冲等。(日常也常简称为 cap;另有较少见义项指“容纳者/容量者”。)

发音 Pronunciation

/ kpstr /

例句 Examples

A capacitor stores electrical energy.
电容器储存电能。

In the power supply, the capacitor smooths out voltage fluctuations to protect sensitive components.
在电源电路中,电容器会平滑电压波动,以保护敏感元件。

词源 Etymology

来自 capacit- / capacity(容量、容纳能力) 的词根,源于拉丁语 capax(“能容纳的”)。在电学语境中,capacitance(电容) 表示“储存电荷的能力”,capacitor 则是“具有电容能力的器件”。

相关词 Related Words

文学作品用例 Literary Works

  • The Invisible Man(H. G. Wells):作品涉及电学与实验装置语境中常见的相关术语(如电路与元件),其中可见 capacitor 这类词在科技描写中的使用。
  • The Soul of a New Machine(Tracy Kidder):描写计算机硬件与工程实践,语境中常出现包括 capacitor 在内的电子元件词汇。
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