Translation guide
A rheostat is a variable resistor used to control current. In Japanese, it is most commonly referred to as レオスタット, but technical terms like 可変抵抗器 are also used. For everyday devices like dimmer switches, more specific words are preferred.
A variable resistor used to adjust current in a circuit, often for controlling light brightness or motor speed.
The most common direct loanword for 'rheostat' in technical contexts. Widely understood in electronics.
A device for varying the brightness of lights, commonly found in homes.
In everyday Japanese, 'rheostat' is rarely used outside technical contexts. For light dimmers, use 調光器 (ちょうこうき). For volume control, use 音量調節 (おんりょうちょうせつ) or ボリューム. Using レオスタット for a light switch may sound overly technical.
This circuit requires a rheostat.
The formal Japanese term meaning 'variable resistor'. Used in engineering and technical documentation.
Adjust the current using a variable resistor.
Specifically refers to a slide-type rheostat, often used in laboratory settings.
We used a slide rheostat in the experiment.
The standard term for a light dimmer. While technically a rheostat can be used, this is the natural word for household dimmer switches.
I installed a dimmer switch in the living room.
A loanword often used in consumer electronics for light controllers, including dimmers.
You can change the brightness with this light controller.