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

    2545 產品顯示為 Potentiometers

    • RS庫存編號 827-5038
    • 製造零件編號 3549S-1AA-103B
    HK$230.90
    Bourns
    10kΩ
    Rotary
    10
    1
    Bushing Mount
    2W
    6.35 mm
    Linear
    -
    Wirewound
    Solder Lug
    ±10%
    3549
    20.6mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    Better World
    HK$687.50
    Schneider Electric
    100kΩ
    Rotary
    -
    1
    Panel Mount
    1W
    6 mm
    Linear
    -
    Cermet
    Faston, Plug In Connector, Screw
    ±10%
    XB4
    30.2mm
    -
    -
    -
    -
    -
    Knurled Shaft
    -
    Yes
    Green Premium
    -
    HK$202.20
    Bourns
    2kΩ
    Rotary
    Continuous
    1
    Panel Mount
    1W
    6.35 mm
    Linear
    -
    Conductive Plastic
    Solder Turret
    ±15%
    6639
    22.2mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    个(每套 100)
    HK$5.401
    Bourns
    10kΩ
    Rotary
    1
    1
    Panel Mount, Through Hole
    0.05W
    6 mm
    Linear
    -
    Carbon
    PC Pin
    ±20%
    PTV09
    25mm
    -
    -
    -
    -
    -
    Flatted Shaft
    -
    -
    -
    -
    • RS庫存編號 161-6911
    • 製造零件編號 91R1A-R22-B20L
    个(每套 45)
    HK$50.676
    Bourns
    100kΩ
    Rotary
    1
    1
    Panel Mount
    2W
    6 mm
    Linear
    -
    Conductive Plastic
    PC Pin
    ±20%
    91
    22mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    毎管:50 个
    HK$17.456
    Bourns
    10kΩ
    Rotary
    1
    1
    Panel Mount, Through Hole
    0.25W
    3.18 mm
    Linear
    -
    Conductive Plastic
    PC Pin
    ±20%
    3310
    12.7mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 167-8695
    • 製造零件編號 PE30L0FL104KAB
    个 (以毎盒:10)
    HK$297.286
    Vishay
    100kΩ
    Rotary
    1
    1
    Panel Mount
    0.9W
    6 mm
    Linear
    -
    Cermet
    Solder Lug
    ±10%
    PE30
    25mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    HK$47.30
    Alps Alpine
    100kΩ
    Rotary
    1
    -
    Panel Mount, Through Hole
    0.05W
    6 mm
    Logarithmic
    -
    -
    Pin
    ±20%
    RK163
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • RS庫存編號 272-2310
    • 製造零件編號 232234 M22S-R47K
    HK$745.12
    Eaton
    -
    Rotary
    1
    1
    Panel Mount
    0.5W
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    HK$152.85
    NIDEC COPAL ELECTRONICS GMBH
    -
    Rotary
    10
    1
    -
    2W
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    HK$24.62
    Alps Alpine
    10kΩ
    Rotary
    1
    2
    Panel Mount, Through Hole
    0.05W
    6 mm
    Logarithmic
    -
    -
    Pin
    ±20%
    RK09L
    20mm
    -
    -
    -
    -
    -
    Flatted Shaft
    -
    -
    -
    -
    • RS庫存編號 789-9447
    • 製造零件編號 91A1A-B28-A13L
    HK$60.30
    Bourns
    5kΩ
    Rotary
    1
    1
    Panel Mount
    2W
    6.35 mm
    Linear
    -
    Cermet
    PC Pin
    ±10%
    91
    22.2mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 790-4388
    • 製造零件編號 P11S2V0FLSY00103KA
    HK$197.00
    Vishay
    10kΩ
    Rotary
    1
    2
    Panel Mount
    0.25W
    6 mm
    Linear
    -
    Cermet
    Solder Lug
    ±10%
    P11S
    25mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 167-3583
    • 製造零件編號 3590S-2-202L
    个(每套 25)
    HK$112.888
    Bourns
    2kΩ
    Rotary
    10
    1
    Panel Mount
    2W
    6.35 mm
    Linear
    -
    Wirewound
    Solder Lug
    ±5%
    3590
    20.6mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    个 (以毎盒:50)
    HK$107.947
    Vishay
    2.5kΩ
    Rotary
    1
    1
    Panel Mount, Through Hole
    0.5W
    3.18 mm
    Linear
    -
    Conductive Plastic
    Pin
    ±20%
    248
    19.1mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 850-9785
    • 製造零件編號 533-1-1-502
    HK$234.10
    Vishay
    5kΩ
    Rotary
    3
    1
    Bushing Mount
    1W
    6.34 mm
    Linear
    -
    Wirewound
    Turret
    ±5%
    533
    22.2mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 167-3597
    • 製造零件編號 3540S-1-101L
    个(每套 25)
    HK$178.80
    Bourns
    100Ω
    Rotary
    10
    1
    Panel Mount
    2W
    6.35 mm
    Linear
    -
    Wirewound
    Solder Lug
    ±5%
    3540
    20.6mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 172-6412
    • 製造零件編號 RS60N1219005
    个(每套 30)
    HK$96.694
    Alps Alpine
    10kΩ
    Slide
    1
    -
    Solder Lug
    0.2W
    -
    Logarithmic
    -
    -
    Pin
    ±20%
    RS60N
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • RS庫存編號 795-4856
    • 製造零件編號 P16NM102MAB15
    HK$226.40
    Vishay
    1kΩ
    Rotary
    -
    1
    Panel Mount
    1W
    16 mm
    Linear
    -
    Cermet
    Solder Lug
    ±20%
    P16
    9.4mm
    -
    -
    -
    -
    -
    Round Shaft
    -
    -
    -
    -
    HK$161.30
    Vishay
    200Ω
    Rotary
    10
    1
    Bushing Mount
    2W
    6.35 mm
    Linear
    -
    Wirewound
    Turret
    ±5%
    534
    20.6mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
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