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

    个 (以每袋裝提供)
    HK$6.90
    Bourns
    100kΩ
    Rotary
    1
    1
    Panel Mount, Through Hole
    0.05W
    6 mm
    Linear
    -
    Carbon
    PC Pin
    ±20%
    PTV09
    20mm
    -
    -
    -
    -
    -
    Knurled Shaft
    -
    -
    -
    -
    • RS庫存編號 790-4388P
    • 製造零件編號 P11S2V0FLSY00103KA
    个 (以每盒裝提供)
    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 502-8558P
    • 製造零件編號 TW1500KA
    个 (以每盒裝提供)
    HK$88.20
    TE Connectivity
    50Ω
    Rotary
    1
    1
    Panel Mount
    1W
    6.35 mm
    Linear
    -
    Wirewound
    Solder Lug
    ±10%
    TW
    15mm
    -
    -
    -
    -
    -
    Round Shaft
    -
    -
    -
    -
    • RS庫存編號 827-4984P
    • 製造零件編號 91R1A-R22-B10L
    个 (以每盒裝提供)
    HK$70.00
    Bourns
    1kΩ
    Rotary
    1
    1
    Panel Mount
    2W
    6 mm
    Linear
    -
    Conductive Plastic
    PC Pin
    ±20%
    91
    22mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 789-9447P
    • 製造零件編號 91A1A-B28-A13L
    个 (以每盒裝提供)
    HK$60.30
    Bourns
    5kΩ
    Rotary
    1
    1
    Panel Mount
    2W
    6.35 mm
    Linear
    -
    Cermet
    PC Pin
    ±10%
    91
    22.2mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    个 (以每袋裝提供)
    HK$171.60
    Bourns
    5kΩ
    Rotary
    Continuous
    1
    Panel Mount
    1W
    6.35 mm
    Linear
    -
    Conductive Plastic
    Solder Turret
    ±15%
    6639
    22.2mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 893-7203P
    • 製造零件編號 SP1-50
    个 (以每盒裝提供)
    HK$2,339.00
    TE Connectivity
    10kΩ
    -
    -
    -
    Bracket Mount
    2W
    -
    Linear
    -
    Conductive Plastic
    Solder
    ±10%
    SP1
    39.4mm
    -
    -
    -
    -
    1270mm
    String Pot
    -
    -
    -
    -
    • RS庫存編號 790-4186P
    • 製造零件編號 P16NM104MAB15
    个 (以每袋裝提供)
    HK$244.81
    Vishay
    100kΩ
    Rotary
    1
    1
    Panel Mount
    1W
    16 mm
    Linear
    -
    Cermet
    Solder Lug
    ±20%
    P16
    9.4mm
    -
    -
    -
    -
    -
    Round Shaft
    -
    -
    -
    -
    • RS庫存編號 789-9393P
    • 製造零件編號 6639S-301-103
    个 (以每袋裝提供)
    HK$193.20
    Bourns
    10kΩ
    Rotary
    1
    1
    Panel Mount
    1W
    6.35 mm
    Linear
    -
    Conductive Plastic
    Solder Turret
    ±15%
    6639
    22.2mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 460-7431P
    • 製造零件編號 357B2102MAB251S22
    个 (以每袋裝提供)
    HK$372.70
    Vishay
    1kΩ
    Rotary
    1
    1
    Panel Mount
    1W
    6.35 mm
    Linear
    -
    Conductive Plastic
    Turret
    ±20%
    357
    22.2mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 790-4192P
    • 製造零件編號 PRV6SAABJYB25103KA
    个 (以每袋裝提供)
    HK$110.10
    Vishay
    10kΩ
    Rotary
    1
    1
    Panel Mount
    0.75W
    3.18 mm
    Linear
    -
    Cermet
    Solder Lug
    ±20%
    PRV6
    22mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 737-7795P
    • 製造零件編號 PTA6043-2015DPB103
    个 (以每盘装提供)
    HK$16.80
    Bourns
    10kΩ
    Slide
    -
    1
    Through Hole
    0.25W
    -
    Linear
    -
    Carbon
    PC Pin
    ±20%
    PTA
    15mm
    -
    -
    -
    -
    60mm
    Lever
    -
    -
    -
    -
    个 (以每盒裝提供)
    HK$331.30
    Vishay
    1kΩ
    Rotary
    Continuous
    1
    Panel Mount
    1W
    22 mm
    Linear
    -
    Conductive Plastic
    Turret
    ±20%
    357
    22mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 246-3123P
    • 製造零件編號 3852A-282-502AL
    个 (以每盘装提供)
    HK$104.30
    Bourns
    -
    Linear
    3 - 3/4
    1
    -
    1W
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • RS庫存編號 753-7293P
    • 製造零件編號 P13SMNFLS472MA
    个 (以每盒裝提供)
    HK$727.63
    Vishay
    4.7kΩ
    Rotary
    1
    1
    Panel Mount
    1.5W
    6 mm
    Linear
    -
    Cermet
    -
    ±20%
    P13SM
    25mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 502-8542P
    • 製造零件編號 TW1250KA
    个 (以每盒裝提供)
    HK$91.90
    TE Connectivity
    25Ω
    Rotary
    1
    1
    Panel Mount
    1W
    6.35 mm
    Linear
    -
    Wirewound
    Solder Lug
    ±10%
    TW
    15mm
    -
    -
    -
    -
    -
    Round Shaft
    -
    -
    -
    -
    • RS庫存編號 684-2677P
    • 製造零件編號 PE60L0FLW100MA
    个 (以每盒裝提供)
    HK$735.96
    Vishay
    10Ω
    Rotary
    1
    1
    Panel Mount
    6W
    6 mm
    Linear
    -
    Cermet
    Wire Lead
    ±20%
    PE60
    25mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 484-9247P
    • 製造零件編號 14920F0GJSX13502KA
    个 (以每盒裝提供)
    HK$193.30
    Vishay
    5kΩ
    Rotary
    1
    2
    Panel Mount, Through Hole
    1W
    6.35 mm
    Linear
    -
    Cermet
    Pin
    ±10%
    149
    22.2mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 770-3093P
    • 製造零件編號 PSM01-082A-103B2
    个 (以每盘装提供)
    HK$242.70
    Bourns
    10kΩ
    Slide
    -
    1
    -
    0.5W
    -
    Audio, Linear
    -
    Carbon
    Snap In
    ±20%
    PSM
    8.2mm
    -
    -
    -
    -
    100mm
    Lever
    -
    -
    -
    -
    • RS庫存編號 743-5692P
    • 製造零件編號 P11L2V0FLSY00103KA
    个 (以每袋裝提供)
    HK$184.50
    Vishay
    10kΩ
    Rotary
    1
    2
    Panel Mount
    0.1W
    6.35 mm
    Linear
    -
    Cermet
    Solder Lug
    ±10%
    P11L
    25mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
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