V2EX double-throw

Double-throw

释义 Definition

double-throw(形容词):指双掷的(尤用于开关/继电器),即一个公共端(common)可以切换连接到两个不同触点/回路中的一个。常见于 SPDT(单刀双掷)DPDT(双刀双掷) 等器件名称中。

发音 Pronunciation (IPA)

/dbl θro/

例句 Examples

A double-throw switch can select between two circuits.
双掷开关可以在两个电路之间进行选择。

In the prototype, a double-throw relay was used to route the sensor signal either to the logger or to the calibration input without rewiring.
在这个原型中,使用了一个双掷继电器,将传感器信号在数据记录器与校准输入之间切换,而无需重新布线。

词源 Etymology

double-throwdouble(双) + throw(掷/拨动行程) 构成。这里的 throw 是电气工程里的术语,表示开关拨动后“掷向”某个触点的切换行程/连接方向;因此 double-throw 字面意思是能掷向两个方向(两路触点)”。

相关词 Related Words

文献与作品 Literary / Notable Works

  • The Art of Electronics(Horowitz & Hill)中在讨论开关、继电器与信号切换时常使用 double-throw(如 SPDT/DPDT)的表述。
  • Practical Electronics for Inventors(Paul Scherz, Simon Monk)在讲解开关类型与电路选择时也会出现 double-throw 等术语。
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