Simple Explanation

A type of variable resistor used to adjust the volume, tone, or other settings on electronic devices.

Concise Technical Definition

A potentiometer is a variable resistor, either rotary or linear, used to control functions such as volume or tone in electronic devices. It works by adjusting the resistance in a circuit, changing the electrical signal's strength or path. A potentiometer can also serve as a passive volume control in audio equipment.

Layman-Friendly Analogy

Think of it like a dimmer switch for a light bulb: turning it adjusts the brightness (or the volume of the sound) by controlling the flow of electricity.

Industry Usage Summary

Potentiometers are widely used in audio equipment (e.g., amplifiers, mixers, and speakers) to control the volume, tone, or balance of the audio signal. They are commonly found as knobs or sliders on devices. In some applications, such as passive volume controls, they adjust the signal without the need for external power, making them a simple and cost-effective solution for adjusting audio levels or other parameters.

Engineering Shortcut

A variable resistor used to adjust signal strength, commonly for volume or tone control.

Full Technical Explanation

A potentiometer (often abbreviated as "pot") is a type of variable resistor used in electronic circuits to control voltage or current flow. It is typically implemented as a rotary or linear dial, with the resistance varying as the knob or slider is adjusted. The potentiometer consists of a resistive element, a wiper that moves along the element, and terminals for the input, output, and ground. The resistance changes when the wiper is moved, adjusting the signal strength or control function. Potentiometers are essential in audio equipment, where they serve to control parameters such as volume, tone, and balance. They can also function as passive volume controls, requiring no power supply to adjust the audio signal directly.