Potentiometer


A potentiometer is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider. If only two terminals are used, one end and the wiper, it acts as a variable resistor or rheostat.

The measuring instrument called a potentiometer is essentially a voltage divider used for measuring electric potential (voltage); the component is an implementation of the same principle, hence its name.

Potentiometers are commonly used to control electrical devices such as volume controls on audio equipment. Potentiometers operated by a mechanism can be used as position transducers, for example, in a joystick. Potentiometers are rarely used to directly control significant power (more than a watt), since the power dissipated in the potentiometer would be comparable to the power in the controlled load.

Potentiometers are rarely used to directly control significant amounts of power (more than a watt or so). Instead they are used to adjust the level of analog signals (for example volume controls audio equipment), and as control inputs for electronic circuits. For example, a light dimmer uses a potentiometer to control the switching of a TRIAC and so indirectly to control the brightness of lamps.

Preset potentiometers are widely used throughout electronics wherever adjustments must be made during manufacturing or servicing.

User-actuated potentiometers are widely used as user controls, and may control a very wide variety of equipment functions. The widespread use of potentiometers in consumer electronics declined in the 1990s, with rotary incremental encoders, up/down push-buttons, and other digital controls now more common. However they remain in many applications, such as volume controls and as position sensors.


There are three POT types: the Rotary Potentiometer, Digital Potentiometer, and Linear Potentiometer.

--Quoted from Wikipedia



10pcs/lot WH148 Linear Potentiometer Kit Single Joint  3Pin 15mm Shaft With Nut And Washer 10value 1piece each value XZ1461

10pcs/lot WH148 Linear Potentiometer Kit Single Joint 3Pin 15mm Shaft With Nut And Washer 10value 1piece each value XZ1461

WH148 Linear Potentiometer Kit Single Joint  3Pin 15mm Shaft With Nut And Washe10Values, each v..

$8.50 Ex Tax: $8.50

5pcs WXD3-13-2W Potentiometer 100ohm/470ohm/680ohm/1K/10K/47K/68K/100K with 5pcs Potentiometer knob FZ1815X5+FZ1816X5

5pcs WXD3-13-2W Potentiometer 100ohm/470ohm/680ohm/1K/10K/47K/68K/100K with 5pcs Potentiometer knob FZ1815X5+FZ1816X5

1、Potentiometer WXD3-13-2WOptional Value : 100Ω 470Ω 680Ω 1K 2.2K 3.3K 4.7K 6.8K 10K 22K 47K 68K 100..

$11.95 Ex Tax: $11.95

5pcs/10pcs/20pcs LA42DWQ-22 Pot Rotary Potentiometer 22mm Adjustable Precision Inverter Speed Regulating Potentiometer with Knob 1K to 500K

5pcs/10pcs/20pcs LA42DWQ-22 Pot Rotary Potentiometer 22mm Adjustable Precision Inverter Speed Regulating Potentiometer with Knob 1K to 500K

Description:Model : LA42DWQ-22Type : Rotary potentiometerMounting Hole : 22mmValue options: 1K 2K 3K..

$17.99 Ex Tax: $17.99

DIYmall 10values 1K to 1M WH148 Single Joint Linear Potentiometer Knob Kit Linear Taper Rotary Potentiometer Panel Pot 15mm Shaft  with Nut and Washer for Arduino FZ1867K

DIYmall 10values 1K to 1M WH148 Single Joint Linear Potentiometer Knob Kit Linear Taper Rotary Potentiometer Panel Pot 15mm Shaft with Nut and Washer for Arduino FZ1867K

Product name:  WH148 Single Joint Linear PotentiometerValue kind:  10valuesValues:  1..

$8.99 Ex Tax: $8.99

Pack of 10pcs 3386P-1-103 Precision Adjustable Potentiometer Trimmer Trimpot Potentiometer 10K with Knob Single-Turn XZ0178X10

Pack of 10pcs 3386P-1-103 Precision Adjustable Potentiometer Trimmer Trimpot Potentiometer 10K with Knob Single-Turn XZ0178X10

Description:3386P Precision Adjustable PotentiometerTrimmer Trimpot PotentiometerResistance 10K, Mar..

$6.99 Ex Tax: $6.99

RM065 Potentiometer Kit 15Values 150pcs 100R-1M Trimpot Trimmer Potentiometer Variable Resistor Adjustable Resistor Kit with Plastic Case FZ3504

RM065 Potentiometer Kit 15Values 150pcs 100R-1M Trimpot Trimmer Potentiometer Variable Resistor Adjustable Resistor Kit with Plastic Case FZ3504

RM065 Potentiometer Kit 15Values 150pcs 100R-1M Trimpot Trimmer Potentiometer Variable Resistor Adju..

$11.50 Ex Tax: $11.50

WH148 Single-Joint Linear Potentiometer 15mm Shaft 3Pins, 1K to 1M Ohm for options, for Volume/Speed Control Knob Switch (Pack of 20/50/100pcs)

WH148 Single-Joint Linear Potentiometer 15mm Shaft 3Pins, 1K to 1M Ohm for options, for Volume/Speed Control Knob Switch (Pack of 20/50/100pcs)

Description:Product: WH148 Single-Joint Linear PotentiometerType: Linear Taper Adjustable Rotary Pot..

$10.60 Ex Tax: $10.60

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