EWA-Q30C15D14

Slide Potentiometers

A potentiometer, or pot, is a three-terminal resistor with a sliding contact that forms an adjustable voltage divider. The position of the slider determines the voltage drop between the contacts, which can act as a control signal in an electronic circuit. Potentiometers are commonly used as volume or balance controls, and can also be used to create low-pass and high-pass filters, or sweep circuits.

The EWA-Q30C15D14 is a slide potentiometer from Electro-WiFi Automation. This slide pot is composed of a conductive plastic element and a conductive plastic moving contact. The potentiometer has a resistance of 15 ohms and its linearity tolerance is between +/-3%. The device requires a secure panel cut of 30mm and it can work in a temperature range of -20C to +85C.

Application Field

The EWA-Q30C15D14 slide potentiometer is mainly used in audio and communication equipment. Its main applications are as a volume or balance control in sound equipment, to adjust frequencies in communication or navigation systems, and to adjust brightness in displays.

Working Principle

The EWA-Q30C15D14 is composed of a slider that can adjust the voltage drop across the entire contact. The slider can be adjusted to any position between the two contacts. A voltage divider is formed between the two contacts, which will have a certain resistance according to the position of the slider. Since the resistance between the two contacts changes according to the position of the slider, a variable voltage is obtained.

The variable voltage output from the EWA-Q30C15D14 slide potentiometer can be used as an input signal for other components or devices, thus allowing for precise control over different functions, such as volume control, frequency adjustments, or brightness control.