Potentiometers

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.

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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. 460-7526
Fabrikantnummer534B1103JL
FabrikantVishay
24,23 €
Each
Aantal stuks
10 kΩ Linear 10 - Panel Mount 2W 6.35 mm - - - Solder Lug ±5% 534 -
RS-stocknr. 167-9487
Fabrikantnummer534B1103JL
FabrikantVishay
22,123 €
Each (In a Box of 10)
Aantal stuks
10 kΩ Rotary 10 1 Panel Mount 2W 6.35 mm Linear - Wirewound Solder Lug ±5% 534 20.6mm
RS-stocknr. 168-140
Fabrikantnummer1623760-2
FabrikantTE Connectivity
4,45 €
Each
Aantal stuks
10 kΩ Rotary 1 1 Panel Mount 0.4W 6.35 mm Linear - Carbon Solder Lug ±20% 23 50mm
RS-stocknr. 249-9238
FabrikantnummerRK1631110TWA
FabrikantAlps Alpine
3,08 €
Each
Aantal stuks
10 kΩ Rotary 1 - Panel Mount, Through Hole 0.1W 6 mm Linear - - Pin ±10% RK163 -
RS-stocknr. 172-6361
FabrikantnummerRK1631110TWA
FabrikantAlps Alpine
1,252 €
Each (In a Box of 2400)
Aantal stuks
10 kΩ Rotary 1 - Panel Mount, Through Hole 0.1W 6 mm Linear - - Pin ±10% RK163 -
RS-stocknr. 135-4432
Fabrikantnummer1623760-2
FabrikantTE Connectivity
2,572 €
Each (In a Box of 200)
Aantal stuks
10 kΩ Rotary 1 1 Panel Mount 0.4W 6.35 mm Linear - Carbon Solder Lug ±20% 23 50mm
RS-stocknr. 107-0779
Fabrikantnummer3590S-2-502L
FabrikantBourns
11,66 €
Each
Aantal stuks
5 kΩ Rotary 10 1 Panel Mount 2W 6.35 mm Linear - Wirewound Solder Lug ±5% 3590 20.6mm
RS-stocknr. 167-3584
Fabrikantnummer3590S-2-502L
FabrikantBourns
10,084 €
Each (In a Tray of 25)
Aantal stuks
5 kΩ Rotary 10 1 Panel Mount 2W 6.35 mm Linear - Wirewound Solder Lug ±5% 3590 20.6mm
RS-stocknr. 107-0785
Fabrikantnummer3590S-2-103L
FabrikantBourns
11,76 €
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Aantal stuks
10 kΩ Rotary 10 1 Panel Mount 2W 6.35 mm Linear - Wirewound Solder Lug ±5% 3590 20.6mm
RS-stocknr. 167-3206
Fabrikantnummer3683S-1-103L
FabrikantBourns
31,704 €
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10 kΩ Digital Display - 2 Panel Mount 2W - - - - Solder Lug ±3% 3680 -
RS-stocknr. 165-5998
Fabrikantnummer3683S-1-103L
FabrikantBourns
46,95 €
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10 kΩ Digital Display - 2 Panel Mount 2W - - - - Solder Lug ±3% 3680 -
RS-stocknr. 460-7582
Fabrikantnummer534B1502JLB
FabrikantVishay
22,72 €
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Aantal stuks
5 kΩ Linear 10 - Panel Mount 2W 6.34 mm - - - Solder Lug ±5% 534 -
RS-stocknr. 167-9502
Fabrikantnummer534B1502JLB
FabrikantVishay
14,034 €
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Aantal stuks
5 kΩ Rotary 10 1 Panel Mount 2W 6.35 mm Linear - Wirewound Solder Lug ±5% 534 20.6mm
RS-stocknr. 263-3270
FabrikantnummerRSA0N11S9002
FabrikantAlps Alpine
5,93 €
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10 kΩ Slide 1 - Through Hole 0.5W - Linear - - Pin ±20% RSA0N -
RS-stocknr. 172-6396
FabrikantnummerRSA0N11S9002
FabrikantAlps Alpine
10,431 €
Each (In a Tray of 40)
Aantal stuks
10 kΩ Slide 1 - Through Hole 0.5W - Linear - - Pin ±20% RSA0N -
RS-stocknr. 502-8621
FabrikantnummerTW1502KA
FabrikantTE Connectivity
12,35 €
Each
Aantal stuks
5 kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm
RS-stocknr. 135-5048
FabrikantnummerTW1502KA
FabrikantTE Connectivity
6,345 €
Each (In a Box of 500)
Aantal stuks
5 kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm
RS-stocknr. 167-8870
FabrikantnummerP11S1V0FLSY00103KL
FabrikantVishay
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Each (In a Box of 60)
Aantal stuks
10 kΩ Rotary 1 1 Panel Mount 1W 6 mm Linear - Cermet Solder Lug ±10% P11S 25mm
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FabrikantAlps Alpine
1,22 €
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Aantal stuks
100 kΩ Rotary 1 - Panel Mount, Through Hole 0.1W 6 mm Linear - - Pin ±20% RK163 -
RS-stocknr. 790-4378
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FabrikantVishay
13,60 €
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Aantal stuks
10 kΩ Rotary 1 1 Panel Mount 1W 6 mm Linear - Cermet Solder Lug ±10% P11S 25mm