Potentiometers | Slide & Rotary | Trimpots | RS
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    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. You can learn more in our complete guide to potentiometers.

    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 KnobsPotentiometer AccessoriesPotentiometer Mounting Nuts

    2589 產品顯示為 Potentiometers

    • RS庫存編號 790-4417
    • 製造零件編號 P16NP223MAB15
    HK$154.20
    Vishay
    22kΩ
    Rotary
    1
    1
    Panel Mount
    1W
    16 mm
    Linear
    -
    Cermet
    Solder Lug
    ±20%
    P16
    8.8mm
    -
    -
    -
    -
    -
    Knurled Shaft
    -
    -
    -
    -
    • RS庫存編號 484-8547P
    • 製造零件編號 14910F0GJSX10102KA
    个 (以每袋裝提供)
    HK$122.00
    Vishay
    1kΩ
    Rotary
    1
    1
    Panel Mount, Through Hole
    1W
    6.35 mm
    Linear
    -
    Cermet
    Pin
    ±10%
    149
    22.2mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    HK$96.70
    Bourns
    100kΩ
    Linear
    1
    -
    Panel Mount, Through Hole
    0.25W
    3.17 mm
    -
    6.35mm
    -
    Pin
    ±20%
    3310H-003
    -
    9.53mm
    5.18mm
    -
    9.53mm
    -
    -
    -
    -
    -
    9.53 x 5.18 x 9.53mm
    个 (以每盒裝提供)
    HK$126.70
    Vishay
    5kΩ
    Rotary
    1
    1
    Panel Mount, Through Hole
    1W
    3.18 mm
    Linear
    -
    Cermet
    Pin
    ±10%
    249
    19.1mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 790-4312
    • 製造零件編號 PE30L0FR474KAB
    HK$201.90
    Vishay
    470kΩ
    Rotary
    1
    1
    Panel Mount
    3W
    6 mm
    Linear
    -
    Cermet
    Solder Lug
    ±10%
    PE30
    50mm
    -
    -
    -
    -
    -
    Round Shaft
    -
    -
    -
    -
    • RS庫存編號 167-5358
    • 製造零件編號 3590S-6-103L
    个(每套 25)
    HK$118.312
    Bourns
    10kΩ
    Rotary
    -
    1
    Panel Mount
    2W
    6 mm
    Linear
    -
    Wirewound
    Solder Lug
    ±5%
    3590
    20.6mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 168-0047
    • 製造零件編號 P11L1V0FLSY00103KA
    个 (以毎盒:40)
    HK$106.65
    Vishay
    10kΩ
    Rotary
    1
    1
    Panel Mount
    0.1W
    6 mm
    Linear
    -
    Cermet
    Solder Lug
    ±10%
    P11L
    25mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 168-0044
    • 製造零件編號 P11L1V0FLSY00102KA
    个 (以毎盒:40)
    HK$107.903
    Vishay
    1kΩ
    Rotary
    1
    1
    Panel Mount
    0.1W
    6 mm
    Linear
    -
    Cermet
    Solder Lug
    ±10%
    P11L
    25mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 161-6884
    • 製造零件編號 51AAA-C28-A15L
    个(每套 45)
    HK$78.773
    Bourns
    10kΩ
    Rotary
    1
    1
    Panel Mount
    1W
    6.35 mm
    Linear
    -
    Cermet
    PC Pin
    ±20%
    51
    22.2mm
    -
    -
    -
    -
    -
    Flatted Shaft
    -
    -
    -
    -
    • RS庫存編號 475-664
    • 製造零件編號 91A1A-B28-A15L
    个(每套 45)
    HK$45.313
    Bourns
    -
    Rotary
    1
    1
    Panel Mount
    2W
    -
    -
    -
    -
    -
    -
    91
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • RS庫存編號 167-9756
    • 製造零件編號 357B2203MAB251S22
    个 (以毎盒:50)
    HK$220.20
    Vishay
    20kΩ
    Rotary
    1
    1
    Panel Mount
    1W
    6.35 mm
    Linear
    -
    Conductive Plastic
    Turret
    ±20%
    357
    22.2mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    HK$126.70
    Vishay
    5kΩ
    Rotary
    1
    1
    Panel Mount, Through Hole
    1W
    3.18 mm
    Linear
    -
    Cermet
    Pin
    ±10%
    249
    19.1mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 790-4230
    • 製造零件編號 P10XXAI203KB30
    HK$105.50
    Vishay
    20kΩ
    Rotary
    1
    1
    Panel Mount
    0.5W
    3 mm
    Linear
    -
    Cermet
    Pin
    ±10%
    P10
    20mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 692-8541
    • 製造零件編號 3549S-2AA-502/502A
    HK$363.90
    Bourns
    5kΩ
    Rotary
    10
    2
    Panel Mount
    2W
    6.35 mm
    Linear
    -
    Wirewound
    Solder Lug
    ±3%
    3549
    20.6mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 329-057
    • 製造零件編號 P16FNM103MARSD
    HK$354.98
    Vishay
    -
    Linear
    -
    -
    Panel Mount
    0.5W
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • RS庫存編號 168-0051
    • 製造零件編號 P11L2V0FLSY00502KA
    个 (以毎盒:40)
    HK$159.52
    Vishay
    5kΩ
    Rotary
    1
    2
    Panel Mount
    0.1W
    6 mm
    Linear
    -
    Cermet
    Solder Lug
    ±10%
    P11L
    25mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 170-8637
    • 製造零件編號 P10XXAI102KB30
    个 (以毎盒:100)
    HK$70.298
    Vishay
    1kΩ
    Rotary
    1
    1
    Panel Mount
    0.5W
    3 mm
    Linear
    -
    Cermet
    Pin
    ±10%
    P10
    20mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 167-3507
    • 製造零件編號 3310C-001-104L
    毎管:50 个
    HK$19.46
    Bourns
    100kΩ
    Rotary
    1
    1
    -
    0.25W
    3.18 mm
    Linear
    -
    Conductive Plastic
    PC Pin
    ±20%
    3310
    12.7mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    毎管:50 个
    HK$17.21
    Bourns
    2kΩ
    Rotary
    1
    1
    Panel Mount, Through Hole
    0.25W
    3.18 mm
    Linear
    -
    Conductive Plastic
    PC Pin
    ±20%
    3310
    12.7mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    个(每套 45)
    HK$172.249
    Bourns
    500kΩ
    Rotary
    Continuous
    1
    Panel Mount
    0.25W
    6 mm
    Linear
    -
    Conductive Plastic
    J-Hook
    ±10%
    82
    19mm
    -
    -
    -
    -
    -
    Round Shaft
    -
    -
    -
    -
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