Potentiometers

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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 164-5242
製造零件編號27ESA103MMF50NF
HK$26.02
個 (以毎盒:100)
單位
10 kΩ Rotary 1 2 Panel Mount 0.4W 4 mm Linear - Carbon Solder ±20% 27 50mm
RS庫存編號 807-7171
製造零件編號27ESA103MMF50NF
HK$32.54
單位
10 kΩ Rotary 1 2 Panel Mount 0.4W 4 mm Linear - Carbon Solder ±20% 27 50mm
RS庫存編號 162-776
製造零件編號404802692032
HK$151.55
單位
100 Ω Rotary 1 1 Panel Mount 2W 6.35 mm Linear - Cermet Pin ±10% M 25.4mm
RS庫存編號 136-1812
製造零件編號TW1253KA
HK$67.607
個 (以毎盒:500)
單位
25 kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm
RS庫存編號 502-8643
製造零件編號TW1253KA
HK$83.93
單位
25 kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm
RS庫存編號 135-4432
製造零件編號1623760-2
HK$35.957
個 (以毎盒:200)
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 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 387-739
製造零件編號1624139-2
HK$23.03
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 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 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 135-5049
製造零件編號TW1103KA
HK$57.906
個 (以毎盒:500)
單位
10 kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm
RS庫存編號 168-364
製造零件編號27ESA103MMF50N
HK$34.73
單位
10 kΩ Rotary 1 2 Panel Mount 0.4W 6.35 mm Linear - Carbon Solder Lug ±20% 27 50mm
RS庫存編號 161-5120
製造零件編號27ESA103MMF50N
HK$28.167
個 (以毎盒:100)
單位
10 kΩ Rotary 1 2 Panel Mount 0.4W 6.35 mm Linear - Carbon Solder Lug ±20% 27 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 502-8637
製造零件編號TW1103KA
HK$80.24
單位
10 kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm
RS庫存編號 161-5122
製造零件編號27ESB103MMF50N
HK$23.01
個 (以毎盒:100)
單位
10 kΩ Rotary 1 2 Panel Mount 0.2W 6.35 mm Logarithmic - Carbon Solder Lug ±20% 27 50mm
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
RS庫存編號 162-861
製造零件編號404802692031
HK$185.45
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 168-320
製造零件編號27ESB103MMF50N
HK$32.36
單位
10 kΩ Rotary 1 2 Panel Mount 0.2W 6.35 mm Logarithmic - Carbon Solder Lug ±20% 27 50mm
RS庫存編號 893-7329
製造零件編號SP2-50
HK$2,065.12
單位
10 kΩ Linear - - Bracket Mount 2W 4.19 mm Linear - Conductive Plastic Cable ±10% SP2 12.7mm