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

    HK$148.70
    Nidec Components
    5kΩ
    Rotary
    10
    -
    Panel Mount
    2W
    6 mm
    Linear
    -
    -
    Solder Lug
    ±5%
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • RS庫存編號 460-7582
    • 製造零件編號 534B1502JL
    HK$287.50
    Vishay
    5kΩ
    Rotary
    10
    1
    Panel Mount
    2W
    6.35 mm
    Linear
    -
    Wirewound
    Solder Lug
    ±5%
    534
    20.6mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    HK$115.20
    Nidec Components
    5kΩ
    Rotary
    1
    -
    Through Hole
    1/8W
    3 mm
    Linear
    -
    -
    Pin
    ±20%
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • RS庫存編號 790-4356
    • 製造零件編號 P11S2V0FLSY00D0046
    HK$180.70
    Vishay
    100kΩ
    Rotary
    1
    2
    Panel Mount
    1W
    6 mm
    -
    -
    Cermet
    Solder Lug
    -
    P11S
    25mm
    -
    -
    -
    -
    -
    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 107-0741
    • 製造零件編號 3590S-2-501L
    HK$142.80
    Bourns
    500Ω
    Rotary
    10
    1
    Panel Mount
    2W
    6.35 mm
    Linear
    -
    Wirewound
    Solder Lug
    ±5%
    3590
    20.6mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 224-7362
    • 製造零件編號 LPCPA005
    HK$670.40
    Lovato
    5kΩ
    Rotary
    -
    -
    -
    1W
    22 mm
    -
    -
    Cermet
    -
    ±10%
    Platinum
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    HK$303.40
    Bourns
    1kΩ
    Digital Display
    -
    2
    Panel Mount
    2W
    -
    Linear
    -
    -
    Solder Lug
    ±3%
    3680
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    个 (以毎盒:50)
    HK$101.444
    Vishay
    100kΩ
    Rotary
    1
    1
    Panel Mount, Through Hole
    1W
    6.35 mm
    Linear
    -
    Cermet
    Pin
    ±10%
    149
    22.2mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 790-4268
    • 製造零件編號 P13LFL106MAB10
    HK$285.03
    Vishay
    10MΩ
    Rotary
    1
    1
    Panel Mount
    0.012W
    6 mm
    Linear
    -
    Cermet
    Solder Lug
    ±20%
    P13
    25mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    个 (以毎盒:50)
    HK$405.862
    Bourns
    500kΩ
    Digital Display
    10
    2
    Panel Mount
    2W
    -
    -
    -
    -
    Solder Lug
    ±3%
    3680
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • RS庫存編號 167-4522
    • 製造零件編號 3547S-1AA-102A
    个(每套 5)
    HK$249.214
    Bourns
    1kΩ
    Rotary
    3
    1
    Panel Mount
    1W
    6.35 mm
    Linear
    -
    Wirewound
    Solder Lug
    ±3%
    3547
    20.6mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 182-5681
    • 製造零件編號 JP-30 2K
    HK$420.20
    Nidec Components
    2kΩ
    Rotary
    1
    1
    -
    1.5W
    4 mm
    Linear
    -
    Cermet
    Solder
    ±2%
    JP-30
    17mm
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • RS庫存編號 502-8637P
    • 製造零件編號 TW1103KA
    个 (以每盒裝提供)
    HK$100.90
    TE Connectivity
    10kΩ
    Rotary
    1
    1
    Panel Mount
    1W
    6.35 mm
    Linear
    -
    Wirewound
    Solder Lug
    ±10%
    TW
    15mm
    -
    -
    -
    -
    -
    Round Shaft
    -
    -
    -
    -
    • RS庫存編號 167-9567
    • 製造零件編號 534B1101JC8872
    个 (以毎盒:10)
    HK$234.75
    Vishay
    100Ω
    Rotary
    10
    1
    Panel Mount
    2W
    6 mm
    Linear
    -
    Wirewound
    Solder Lug
    ±5%
    534
    20.6mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 486-7093
    • 製造零件編號 534B1103JC8872
    HK$231.70
    Vishay
    10kΩ
    Rotary
    10
    1
    Panel Mount
    2W
    6 mm
    Linear
    -
    Wirewound
    Solder Lug
    ±5%
    534
    20.6mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    HK$62.70
    Bourns
    1kΩ
    Rotary
    1
    2
    Panel Mount, Through Hole
    0.25W
    3.18 mm
    Linear
    -
    Conductive Plastic
    PC Pin
    ±20%
    3310
    12.7mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    HK$24.84
    Alps Alpine
    50kΩ
    Rotary
    1
    1
    Panel Mount, Through Hole
    0.05W
    6 mm
    Linear
    -
    -
    Pin
    ±20%
    RK09L
    15mm
    -
    -
    -
    -
    -
    Flatted Shaft
    -
    -
    -
    -
    个(每套 80)
    HK$26.176
    Alps Alpine
    10kΩ
    Rotary
    1
    -
    Panel Mount, Through Hole
    0.05W
    6 mm
    Linear
    -
    -
    Pin
    ±20%
    RK097
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • RS庫存編號 167-3602
    • 製造零件編號 3540S-1-502L
    个(每套 25)
    HK$189.324
    Bourns
    5kΩ
    Rotary
    10
    1
    Panel Mount
    2W
    6.35 mm
    Linear
    -
    Wirewound
    Solder Lug
    ±5%
    3540
    20.6mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
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