V2EX open circuit

Open Circuit

Definition / 定义

开路;断路:电路中某处连接断开,电流无法形成闭合回路,因此在理想情况下电流为零(或极小)。常见于开关断开、导线断裂、接触不良等情形。亦可引申为“处于未接通状态”。

Pronunciation / 发音

/opn skt/

Examples / 例句

The switch is off, so the circuit is open.
开关处于关闭状态,所以电路是开路的。

If there’s an open circuit in the sensor wiring, the controller may read a fault and shut the system down for safety.
如果传感器线路出现开路,控制器可能会读取到故障并为安全起见关闭系统。

Etymology / 词源

open 源自古英语 open(“打开的、敞开的”);circuit 源自拉丁语 circuitus(“环行、回路”)。组合为 open circuit,字面意思是“回路是打开的”,即回路不闭合,从而无法正常导电。

Related Words / 相关词

Literary Works / 文学作品中的用例

  • The Art of Electronics(Horowitz & Hill)在电路分析与测量章节中频繁使用“open-circuit(开路)”来讨论开路电压、输入阻抗等概念。
  • Introduction to Electric Circuits(Dorf & Svoboda)以“open circuit”说明电路拓扑与基尔霍夫定律的边界条件。
  • Practical Electronics for Inventors(Scherz & Monk)在故障排查部分用“open circuit”描述断线、虚焊等常见问题。
  • The Feynman Lectures on Physics(Feynman 等)在基础电学内容中提及开路/闭路情形,用于解释电流与电势差的关系。
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