Translation guide
The device or system that provides electrical power to a circuit or device. In Japanese, the term depends on whether you mean the physical unit (like a computer PSU), the general concept of supplying power, or the electrical source.
Referring to the actual hardware component that converts and delivers power.
Common term for a power supply unit, especially in computing and electronics. Often abbreviated as PSU.
新しい電源ユニットを買わないといけない。
I need to buy a new power supply unit.
More formal or technical term for a power supply device. Used in engineering contexts.
この電源装置は最大500Wまで対応しています。
This power supply unit supports up to 500W.
Can mean power supply as a unit, but also means power source or simply 'power'. Context clarifies.
パソコンの電源が壊れた。
The computer's power supply broke.
Talking about the availability or source of electricity, not a specific device.
The most common word for power source or electricity supply. Can refer to a wall outlet, battery, or any source.
電源を入れてください。
Please turn on the power.
電源が落ちた。
The power went out.
Technical term for supply power or feeding power, used in engineering.
供給電源の電圧を確認してください。
Please check the voltage of the supply power.
Specifically a battery backup system that provides emergency power.
Standard term for UPS. Often abbreviated as UPS (ユーピーエス) in speech.
サーバーには無停電電源装置が必要です。
A UPS is necessary for the server.
Common abbreviation used in IT and electronics.
UPSを設置しました。
We installed a UPS.
電源 is the most general term and can mean power source, power button, or power supply depending on context. 電源ユニット specifically refers to a modular power supply unit, like in a PC. 電源装置 is a formal/technical term for a power supply device.
電源を切ってください。
Please turn off the power.
電源ユニットを交換する。
Replace the power supply unit.
Formal term for electricity supply, often used in technical or infrastructure contexts.
安定した電力供給が必要です。
A stable power supply is necessary.