potensiometri

A potentiometer is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider. It is commonly used to control electrical devices such as volume controls on audio equipment, dimmers for lighting, and speed controls for motors. The potentiometer's resistance can be varied by adjusting the position of the sliding contact, which changes the voltage or current output.

There are three main types of potentiometers: linear, logarithmic, and audio taper. Linear potentiometers provide a uniform resistance change as the contact moves, making them suitable for applications where a linear response is required. Logarithmic potentiometers, on the other hand, provide a non-linear resistance change, which is useful for applications like audio volume controls where a more natural-sounding response is desired. Audio taper potentiometers offer a compromise between linear and logarithmic taper, providing a more consistent response across a wide range of volumes.

Potentiometers are available in various sizes and configurations, including single-gang, double-gang, and multi-gang units, as well as surface-mount and through-hole packages for use in printed circuit boards. They can be operated manually or electronically, with some models featuring motorized or servo-controlled mechanisms for automated adjustment.

In summary, potentiometers are versatile and widely used components in electronic circuits, offering adjustable resistance and voltage division capabilities. Their various types and configurations make them suitable for a wide range of applications, from simple control functions to complex automation systems.