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.

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.


Need ’Digital Potentiometers’?


Digital Potentiometers

Looking for peripherals for your potentiometer?


Potentiometer Knobs


Potentiometer Accessories


Potentiometer Mounting Nuts


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Description Price 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庫存編號 167-3581
製造零件編號3590S-2-501L
BrandYageo
HK$99.39
Each (In a Tray of 25)
單位
500 Ω Rotary 10 1 Panel Mount 2W 6.35 mm Linear - Wirewound Solder Lug ±5% 3590 20.6mm
RS庫存編號 167-9501
製造零件編號534B1501JL
BrandVishay
HK$130.72
個 (以毎盒:10)
單位
500 Ω Rotary 10 1 Panel Mount 2W 6.35 mm Linear - Wirewound Solder Lug ±5% 534 20.6mm
RS庫存編號 167-9634
製造零件編號14910F0GJSX10103KA
BrandVishay
HK$66.25
個 (以毎盒:50)
單位
10 kΩ Rotary 1 1 Panel Mount, Through Hole 1W 6.35 mm Linear - Cermet Pin ±10% 149 22.2mm
RS庫存編號 167-8743
製造零件編號P16NP102MAB15
BrandVishay
HK$91.551
個 (以毎盒:20)
單位
1 kΩ Rotary 1 1 Panel Mount 1W 16 mm Linear - Cermet Solder Lug ±20% P16 8.8mm
RS庫存編號 387-745
製造零件編號1623757-2
HK$37.38
單位
1 kΩ Rotary 1 1 Panel Mount 0.4W 6.35 mm Linear - Carbon Solder Lug ±20% 23 50mm
RS庫存編號 167-8751
製造零件編號P16NP472MAB15
BrandVishay
HK$118.365
個 (以毎盒:20)
單位
4.7 kΩ Rotary 1 1 Panel Mount 1W 16 mm Linear - Cermet Solder Lug ±20% P16 8.8mm
RS庫存編號 790-4280
製造零件編號PE30L0FR221KAB
BrandVishay
HK$155.80
單位
220 Ω Rotary 1 1 Panel Mount 3W 6 mm Linear - Cermet Solder Lug ±10% PE30 50mm
RS庫存編號 263-3034
製造零件編號RK09K1130A0H
HK$9.39
單位
10 kΩ Rotary 1 - Panel Mount, Through Hole 0.05W 6 mm Linear - - Pin ±20% RK09K -
RS庫存編號 294-3729
製造零件編號860B1501
BrandVishay
HK$988.19
單位
500 Ω Rotary 10 1 Panel Mount 8W 6.35 mm Linear - Wirewound Solder Lug ±1% 860 20.6mm
RS庫存編號 790-4435
製造零件編號P16NP472MAB15
BrandVishay
HK$107.12
單位
4.7 kΩ Rotary 1 1 Panel Mount 1W 16 mm Linear - Cermet Solder Lug ±20% P16 8.8mm
RS庫存編號 172-7588
製造零件編號RK09K1130A0H
HK$5.646
個 (以毎盒:1000)
單位
10 kΩ Rotary 1 - Panel Mount, Through Hole 0.05W 6 mm Linear - - Pin ±20% RK09K -
RS庫存編號 168-140
製造零件編號1623760-2
HK$31.45
單位
10 kΩ Rotary 1 1 Panel Mount 0.4W 6.35 mm Linear - Carbon Solder Lug ±20% 23 50mm
RS庫存編號 737-7818
製造零件編號PTV09A-2015F-B103
BrandBourns
HK$4.63
單位
10 kΩ Rotary 1 1 Through Hole 0.05W 6 mm Linear - Carbon PC Pin ±20% PTV09 15mm
RS庫存編號 135-4478
製造零件編號1623757-2
HK$25.049
個 (以毎盒:200)
單位
1 kΩ Rotary 1 1 Panel Mount 0.4W 6.35 mm Linear - Carbon Solder Lug ±20% 23 50mm
RS庫存編號 167-8679
製造零件編號PE30L0FR221KAB
BrandVishay
HK$197.803
個 (以毎盒:10)
單位
220 Ω Rotary 1 1 Panel Mount 3W 6 mm Linear - Cermet Solder Lug ±10% PE30 50mm
RS庫存編號 135-4477
製造零件編號1624139-2
HK$22.269
個 (以毎盒:200)
單位
4.7 kΩ Rotary 1 1 Panel Mount 0.4W 6.35 mm Linear - Carbon Solder Lug ±20% 23 50mm
RS庫存編號 486-7087
製造零件編號534B1102JC8872
BrandVishay
HK$113.23
單位
1 kΩ Rotary 10 1 Panel Mount 2W 6 mm Linear - Wirewound Solder Lug ±5% 534 20.6mm
RS庫存編號 219-9146
製造零件編號RK27112A00AK
HK$127.15
單位
100 kΩ Rotary 1 2 Through Hole 0.05W 6 mm Logarithmic - Carbon Pin ±20% RK27 20mm
RS庫存編號 162-861
製造零件編號404802692031
HK$148.19
單位
100 kΩ Rotary 1 1 Panel Mount 2W 6.35 mm Linear - Cermet Pin ±10% M 25.4mm
RS庫存編號 162-883
製造零件編號404802692030
HK$130.66
單位
470 kΩ Rotary 1 1 Panel Mount 2W 6.35 mm Linear - Cermet Pin ±10% M 25mm