V2EX threshold voltage

Threshold Voltage

定义 Definition

Threshold voltage 指“阈值电压”:在电子器件(尤其是 MOSFET、CMOS 电路)中,使器件刚开始导通或使通道开始形成所需的最小栅极电压(常写作 Vth)。在不同语境下也可泛指“触发某种效应所需的临界电压”。

发音 Pronunciation (IPA)

/θrehold voltd/

例句 Examples

The threshold voltage of this MOSFET is about 0.7 V.
这个 MOSFET 的阈值电压大约是 0.7 伏。

As temperature rises, the threshold voltage can shift, which may affect the circuit’s timing and power consumption.
随着温度升高,阈值电压可能发生漂移,从而影响电路的时序与功耗。

词源 Etymology

threshold 原义是“门槛、门口的槛”,引申为“临界点、起始点”;voltage 来自 “volt(伏特)+ -age(名词后缀)”,表示“电压”。合起来就是“达到某个临界状态所需的电压”。

相关词 Related Words

文学与著作中的用例 Literary Works

  • Microelectronic Circuits(Sedra & Smith)在 MOSFET 章节中系统讨论阈值电压与器件工作区。
  • CMOS VLSI Design: A Circuits and Systems Perspective(Weste & Harris)在 CMOS 设计与功耗/工艺变化内容中频繁使用 “threshold voltage”。
  • The Art of Electronics(Horowitz & Hill)在半导体器件与电路分析相关段落提及阈值/导通条件(不同版本表述可能略有差异)。
  • IEEE 期刊论文(如 IEEE Journal of Solid-State Circuits)在工艺缩放、低功耗设计、亚阈值电路等主题中常见 “threshold voltage (Vth)” 用法。
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