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

    2547 產品顯示為 Potentiometers

    • RS庫存編號 460-7453P
    • 製造零件編號 357B2202MAB251S22
    个 (以每盒裝提供)
    HK$210.60
    Vishay
    2kΩ
    Rotary
    1
    1
    Panel Mount
    1W
    6.35 mm
    Linear
    -
    Conductive Plastic
    Turret
    ±20%
    357
    22.2mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    个 (以每袋裝提供)
    HK$47.00
    Bourns
    100Ω
    Rotary
    1
    1
    Panel Mount, Through Hole
    2W
    6 mm
    Linear
    -
    Cermet
    PC Pin
    ±10%
    93
    22mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 692-8676P
    • 製造零件編號 91A1A-B28-B20L
    个 (以每卷裝提供)
    HK$44.40
    Bourns
    100kΩ
    Rotary
    1
    1
    Panel Mount
    0.5W
    6.35 mm
    Linear
    -
    Conductive Plastic
    PC Pin
    ±20%
    91
    22.2mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    个 (以每卷裝提供)
    HK$50.10
    Bourns
    10kΩ
    Rotary
    1
    1
    Panel Mount, Through Hole
    0.5W
    6.35 mm
    Linear
    -
    Conductive Plastic
    PC Pin
    ±20%
    91
    22.2mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    个 (以每盒裝提供)
    HK$142.80
    Vishay
    500Ω
    Rotary
    1
    1
    Panel Mount, Through Hole
    1W
    6.35 mm
    Linear
    -
    Cermet
    Pin
    ±10%
    249
    22.2mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 790-4476P
    • 製造零件編號 PE30L0FL221KAB
    个 (以每袋裝提供)
    HK$271.10
    Vishay
    220Ω
    Rotary
    1
    1
    Panel Mount
    3W
    6 mm
    Linear
    -
    Cermet
    Solder Lug
    ±10%
    PE30
    25mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 753-7284P
    • 製造零件編號 P13SMNFGS103MA
    个 (以每袋裝提供)
    HK$725.40
    Vishay
    10kΩ
    Rotary
    1
    1
    Panel Mount
    1.5W
    6 mm
    Linear
    -
    Cermet
    -
    ±20%
    P13SM
    16mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 252-0382
    • 製造零件編號 RV30YN20S B302
    HK$87.26
    Tokyo Cosmos Electric
    -
    Linear
    1
    1
    -
    0.8W
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • RS庫存編號 789-9419P
    • 製造零件編號 51AAA-C28-A15L
    个 (以每盘装提供)
    HK$92.00
    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 790-4381P
    • 製造零件編號 P11S1V0FLSY00103KA
    个 (以每袋裝提供)
    HK$122.80
    Vishay
    10kΩ
    Rotary
    1
    1
    Panel Mount
    1W
    6 mm
    Linear
    -
    Cermet
    Solder Lug
    ±10%
    P11S
    25mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    个 (以每袋裝提供)
    HK$303.40
    Bourns
    1kΩ
    Digital Display
    -
    2
    Panel Mount
    2W
    -
    Linear
    -
    -
    Solder Lug
    ±3%
    3680
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • RS庫存編號 789-9444P
    • 製造零件編號 92R1A-R22-B13L
    个 (以每盘装提供)
    HK$72.20
    Bourns
    5kΩ
    Rotary
    1
    1
    Panel Mount
    0.5W
    6 mm
    Linear
    -
    Conductive Plastic
    J-Hook
    ±20%
    92
    22mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    个 (以每袋裝提供)
    HK$284.70
    Vishay
    10kΩ
    Rotary
    Continuous
    1
    Panel Mount
    1W
    6.35 mm
    Linear
    -
    Conductive Plastic
    Turret
    ±20%
    357
    22.2mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 790-4164P
    • 製造零件編號 P16NM471MAB15
    个 (以每盒裝提供)
    HK$226.40
    Vishay
    470Ω
    Rotary
    1
    1
    Panel Mount
    1W
    16 mm
    Linear
    -
    Cermet
    Solder Lug
    ±20%
    P16
    9.4mm
    -
    -
    -
    -
    -
    Round Shaft
    -
    -
    -
    -
    • RS庫存編號 743-5670P
    • 製造零件編號 P11L1V0FLSY00102KA
    个 (以每盒裝提供)
    HK$150.20
    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 522-0502P
    • 製造零件編號 3310C-001-502L
    个 (以每管裝提供)
    HK$20.60
    Bourns
    5kΩ
    Rotary
    1
    1
    -
    0.25W
    3.18 mm
    Linear
    -
    Conductive Plastic
    PC Pin
    ±20%
    3310
    12.7mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 692-8547P
    • 製造零件編號 3549S-1AE-502A
    个 (以每盒裝提供)
    HK$299.50
    Bourns
    5kΩ
    Rotary
    10
    1
    Servo Mount
    2W
    3.18 mm
    Linear
    -
    Wirewound
    Solder Lug
    ±3%
    3549
    9.5mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    HK$120.00
    Vishay
    25kΩ
    Rotary
    1
    1
    Panel Mount, Through Hole
    1W
    6.35 mm
    Linear
    -
    Cermet
    Pin
    ±10%
    249
    22.2mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 240-862
    • 製造零件編號 188112 M30I-FR470K
    HK$702.20
    Eaton
    -
    Linear
    -
    1
    Screw Mount
    0.5W
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • RS庫存編號 223-4658
    • 製造零件編號 P16NP472KAB15
    HK$173.70
    Vishay
    -
    Linear
    1
    1
    -
    1W
    -
    Linear
    -
    Cermet
    -
    ±20
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
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