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.
I need to buy a new power supply unit.
Can mean power supply as a unit, but also means power source or simply 'power'. Context clarifies.
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.
Please turn on the power.
The power went out.
Technical term for supply power or feeding power, used in engineering.
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.
A UPS is necessary for the server.
Common abbreviation used in IT and electronics.
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.
Please turn off the power.
Replace the power supply unit.
More formal or technical term for a power supply device. Used in engineering contexts.
This power supply unit supports up to 500W.
パソコンの電源が壊れた。
The computer's power supply broke.
Formal term for electricity supply, often used in technical or infrastructure contexts.
A stable power supply is necessary.
Please check the voltage of the supply power.