V2EX no-load voltage

No-Load Voltage

释义 Definition

空载电压:电源或设备在未连接负载、几乎不输出电流时,其输出端(端子)测得的电压。常用于描述电池、适配器、电源、变压器等在“空载/轻载”状态下的电压表现。(也常与 open-circuit voltage 相关或近似使用,但具体语境可能略有区别。)

发音 Pronunciation (IPA)

/nolod voltd/

例句 Examples

Measure the no-load voltage of the battery before connecting it to the circuit.
在把电池接入电路之前,先测量它的空载电压。

Because the regulator cannot sink current, the no-load voltage may rise above the nominal value unless a minimum load is provided.
由于稳压器无法吸收电流,若不提供最小负载,空载电压可能会升高并超过标称值。

词源 Etymology

no-load(无负载的) + voltage(电压) 组合而成的工程术语:强调“在不带负载、几乎没有电流输出”的条件下测得的电压,用来区分带载时因内阻、压降、调节率等因素导致的电压变化。

相关词 Related Words

文学与经典著作中的用例 Literary Works

  • The Art of Electronics(Horowitz & Hill)在电源与稳压/测量讨论中常出现空载与带载电压的对比表述(含“no-load voltage”用语)。
  • Practical Electronics for Inventors(Paul Scherz, Simon Monk)在电源适配器、整流与稳压章节中常提到空载电压偏高等现象。
  • Electric Machinery Fundamentals(Stephen J. Chapman)在变压器与电机基础内容中会涉及空载条件下的电压/特性描述(包含相关术语用法)。
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