V2EX voltage-divider

Voltage Divider

释义 Definition

Voltage divider(分压器/分压电路):一种利用两个或多个元件(最常见为电阻)串联,把输入电压按比例“分出”一部分作为输出电压的电路结构。常用于电压测量、信号衰减、基准电压取样等。(也可用电容、电感或阻抗网络实现分压)

发音 Pronunciation (IPA)

/voltd dvadr/

例句 Examples

A voltage divider can turn 9 volts into 3 volts.
分压器可以把 9 伏的电压变成 3 伏。

Because the sensor has a high output impedance, we used a voltage divider with a buffer to prevent loading from changing the measured voltage.
由于传感器输出阻抗较高,我们使用分压器并加了缓冲器,避免负载效应改变测得的电压。

词源 Etymology

该词由 voltage(电压) + divider(分配器/分割器)构成,字面意思是“把电压分开/分配的装置”。在电子电路语境中,“divide”指按比例把输入电压分成若干部分,其中取出一部分作为输出。

相关词 Related Words

文献与作品 Literary / Notable Works

  • The Art of Electronics(Horowitz & Hill)以分压器讲解电阻网络、负载效应与实际测量误差
  • Microelectronic Circuits(Sedra & Smith)在基础电路分析与偏置电路中频繁使用分压器
  • Practical Electronics for Inventors(Paul Scherz & Simon Monk)用分压器介绍传感器接口与ADC输入保护/量程匹配
  • The ARRL Handbook for Radio Communications(ARRL)在射频与测试电路中提及分压/衰减网络
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