Potentiometers

What is a potentiometer?



A potentiometer is a variable resistor. Potentiometers enable you to regulate and change the current flowing through a circuit. Potentiometers can also be called pots or potmeters.



Potentiometers have two terminals that are fixed to a resistive element (the track). The resistive element is typically wirewound or made from carbon, cermet or conductive plastic. The third terminal is connected to the wiper, which is a sliding contact. As the wiper moves along the track, the resistance changes and the current flowing through the circuit changes.



Types of potentiometer



Rotary potentiometers are easily controlled by turning a spindle or a knob. Rotary potentiometers can be single turn or multiturn.



Slide potentiometers are also known as slider potentiometers or fader potentiometers. To use a slide potentiometer, it’s simply a case of sliding a fader along a straight track to change the resistance.



Trimmer potentiometers, sometimes called trimpots, are used to calibrate and fine-tune circuits and can be mounted straight onto a PCB (printed circuit board). Trimmer potentiometers are easy to adjust with a screwdriver.



String potentiometers (or string pots) take movement and transform it into an electrical signal.



Membrane potentiometers are completely flat. Membrane potentiometers change their resistance when pressure is applied to the membrane.



Do I need a potentiometer with a linear or logarithmic taper?



The taper you need for your potentiometer depends on the intended application.



For potentiometers with a linear taper, the resistance between one end of the track and the wiper varies at a constant rate. If you turn the potentiometer halfway or slide the fader halfway along the track, the resistance will be half of the total resistance. Linear taper potentiometers are typically used in applications such as light dimmer switches.



For logarithmic taper potentiometers, the resistance does not vary at a constant rate. The level of resistance moves exponentially up or down. A potentiometer that has been turned or moved halfway along its track, will not produce resistance that is half the total resistance. Logarithmic potentiometers are commonly used for audio applications.



What is the difference between a potentiometer and a rheostat?



The key difference is the number of terminals that each device has. Potentiometers have three terminals while rheostats only have two terminals.



Looking for peripherals for your potentiometer?



Potentiometer Knobs

Potentiometer Accessories

Potentiometer Mounting Nuts

...
Lees meer Lees minder

Filters

1 - 20 van 2127 producten worden weergegeven
Resultaten per pagina
Omschrijving Prijs Maximum Resistance Potentiometer Type Number of Turns Number of Gangs Mounting Type Power Rating Shaft Diameter Electrical Taper Mounting Hole Diameter Element Material Termination Style Tolerance Series Shaft Length
RS-stocknr. 170-5317
FabrikantRS PRO
26,054 €
Each (In a Box of 100)
Aantal stuks
2.5kΩ Linear 1 4 Panel Mount 1.5W 6.35 mm Linear - - Solder Lug ±10% CLR4000 -
RS-stocknr. 812-831
FabrikantRS PRO
42,82 €
Each
Aantal stuks
2.5kΩ Rotary 1 4 Panel Mount 1.5W 6.35 mm Linear - Wirewound Solder Lug ±10% CLR4000 -
RS-stocknr. 317-780
FabrikantRS PRO
32,14 €
Each
Aantal stuks
5kΩ - 1 - Panel Mount - 3 mm Linear - Conductive Plastic Wire Lead ±20% LM10 -
RS-stocknr. 842-7208
FabrikantRS PRO
174,17 €
Each
Aantal stuks
10kΩ Linear - 1 Spring Return - - Linear - Conductive Plastic - ±20% WT22 -
RS-stocknr. 173-0780
FabrikantRS PRO
98,514 €
Each (In a Box of 5)
Aantal stuks
10kΩ Linear - - Spring Return - - Linear - Conductive Plastic - ±20% WT22 -
RS-stocknr. 173-0759
FabrikantRS PRO
4,263 €
Each (In a Box of 50)
Aantal stuks
5kΩ - 1 - Panel Mount 1W 6.35 mm - - Wirewound Solder ±20% P25 22mm
RS-stocknr. 842-7090
FabrikantRS PRO
18,48 €
Each
Aantal stuks
10kΩ Rotary 1 1 Panel Mount 3W 6.35 mm Linear - Wirewound Solder ±10% P40 68mm
RS-stocknr. 842-7116
FabrikantRS PRO
7,93 €
Each
Aantal stuks
5kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder ±20% P25 22mm
RS-stocknr. 842-7100
FabrikantRS PRO
18,48 €
Each
Aantal stuks
5kΩ Rotary 1 1 Panel Mount 3W 6.35 mm Linear - Wirewound Solder ±10% P40 68mm
RS-stocknr. 173-0740
FabrikantRS PRO
1,861 €
Each (In a Box of 50)
Aantal stuks
5kΩ - 1 - Panel Mount 3W 6.35 mm - - Wirewound Solder ±10% P40 68mm
RS-stocknr. 173-0738
FabrikantRS PRO
1,861 €
Each (In a Box of 50)
Aantal stuks
10kΩ - 1 - Panel Mount 3W 6.35 mm - - Wirewound Solder ±10% P40 68mm
RS-stocknr. 842-7201
FabrikantRS PRO
162,61 €
Each
Aantal stuks
5kΩ Linear - 1 Spring Return - - Linear - Conductive Plastic - ±20% WT22 -
RS-stocknr. 173-0778
FabrikantRS PRO
88,316 €
Each (In a Box of 5)
Aantal stuks
5kΩ Linear - - Spring Return - - Linear - Conductive Plastic - ±20% WT22 -
RS-stocknr. 173-0735
FabrikantRS PRO
1,283 €
Each (In a Box of 50)
Aantal stuks
100Ω - 1 - Panel Mount 1W 6.35 mm - - Wirewound Solder ±10% P25 25mm
RS-stocknr. 842-7181
FabrikantRS PRO
73,87 €
Each
Aantal stuks
10kΩ Linear - 1 - - 4 mm Linear - Conductive Plastic Solder Tab ±30% 149618 28mm
RS-stocknr. 173-0772
FabrikantRS PRO
67,934 €
Each (In a Box of 5)
Aantal stuks
10kΩ Linear - - - - 4 mm Linear - Conductive Plastic Solder Tab ±30% 149618 28mm
RS-stocknr. 173-0723
FabrikantRS PRO
1,283 €
Each (In a Box of 50)
Aantal stuks
250Ω - 1 - Panel Mount 1W 6.35 mm - - Wirewound Solder ±10% P25 25mm
RS-stocknr. 842-7122
FabrikantRS PRO
7,96 €
Each
Aantal stuks
1kΩ Rotary 1 1 Bushing Mount 1W 6.35 mm Linear - Conductive Plastic Solder ±20% NP22 25mm
RS-stocknr. 842-7131
FabrikantRS PRO
8,16 €
Each
Aantal stuks
1kΩ Rotary 10 1 Panel Mount 2W 6.35 mm Linear - Wirewound Solder ±10% NHP22 20.5mm
RS-stocknr. 170-5318
FabrikantRS PRO
26,054 €
Each (In a Box of 100)
Aantal stuks
5kΩ Linear 1 4 Panel Mount 1.5W 6.35 mm Linear - - Solder Lug ±10% CLR4000 -
Related Products
Precision bush mount continuous rotation potentiometerOccupies minimal space ...
Description:
Precision bush mount continuous rotation potentiometerOccupies minimal space behind the panelExcellent rotational life - high quality rugged constructionElectrical angle 340° effectiveConductive plastic element.
Bourns 91 Series are single turn, rotary linear ...
Description:
Bourns 91 Series are single turn, rotary linear potentiometers. Features and Benefits:Available in various pin-out configurationsOne piece shaft and rotor assemblyPanel and PCB mountableConductive plastic resistance elementLinear and audio (log) output track optionsLong mechanical life (100000 cycles)Plastic or ...
Vishay P11L series long life cermet potentiometers are ...
Description:
Vishay P11L series long life cermet potentiometers are economical, long-life panel potentiometers featuring up to four modules and a compact 12.5-mm size. While standard low-cost panel potentiometers reach 50,000 cycles, the P11L offers a long life of 2 million cycles. ...
The Bourns 65 series servo mount style single ...
Description:
The Bourns 65 series servo mount style single turn precision potentiometers with a front shaft supported by front and rear precision ball bearings. Features and Benefits:All models provide excellent reliability and high qualityMolded-in rear terminals.