variable resistor
Definition
- Noun:
- A resistor for regulating current: A variable resistor is an electrical component designed to provide an adjustable amount of electrical resistance in a circuit, thereby allowing the regulation of current flow or voltage levels.
Usage Examples
- Noun:
- The technician adjusted the variable resistor to control the motor's speed.
- A variable resistor, such as a potentiometer, is essential in this volume control circuit.
Advanced Usage
- In technical specifications: Often specified by its resistance range (e.g., 0-10kΩ) and power rating.
- The design requires a 5kΩ logarithmic-taper variable resistor.
Variants and Related Words
- Potentiometer (n): A common three-terminal type of variable resistor often used as a voltage divider.
- Rheostat (n): A two-terminal variable resistor typically used to control current.
- Trimmer (n): A small variable resistor designed for occasional adjustment, often found on circuit boards.
- Adjustable resistor: A more general descriptive term.
Synonyms
- Adjustable resistor
- Pot (informal, short for potentiometer)
Related Phrases
- To vary the resistance: The primary function.
- You can vary the resistance by turning the knob.
Related Terminology
- Taper: Refers to the relationship between the position of the control and the resistance (e.g., linear or logarithmic taper).
- Wiper: The movable contact that slides along the resistive element to change the resistance value.
Noun
-
resistor for regulating current
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