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

    2590 產品顯示為 Potentiometers

    • RS庫存編號 790-4407
    • 製造零件編號 P16NP101MAB15
    HK$128.70
    Vishay
    100Ω
    Rotary
    1
    1
    Panel Mount
    1W
    16 mm
    Linear
    -
    Cermet
    Solder Lug
    ±20%
    P16
    8.8mm
    -
    -
    -
    -
    -
    Knurled Shaft
    -
    -
    -
    -
    • RS庫存編號 743-5696
    • 製造零件編號 P11L2V0FLSY00503KA
    HK$183.90
    Vishay
    50kΩ
    Rotary
    1
    2
    Panel Mount
    0.1W
    6 mm
    Linear
    -
    Cermet
    Solder Lug
    ±10%
    P11L
    25mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    HK$59.00
    Vishay
    100Ω
    Rotary
    1
    1
    Panel Mount, Through Hole
    0.5W
    3 mm
    Linear
    -
    Cermet
    Pin
    ±10%
    P10
    20mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    HK$171.70
    Bourns
    10kΩ
    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 522-5311
    • 製造零件編號 93R1A-R22-A17L
    HK$51.40
    Bourns
    25kΩ
    -
    1
    -
    Panel Mount, Through Hole
    2W
    6 mm
    -
    -
    -
    Pin
    ±10%
    93
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • RS庫存編號 790-4246
    • 製造零件編號 P10XXAI204KB30
    HK$105.50
    Vishay
    200kΩ
    Rotary
    1
    1
    Panel Mount
    0.28W
    3 mm
    Linear
    -
    Cermet
    Pin
    ±10%
    P10
    20mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 173-754
    • 製造零件編號 157B502MX9001
    HK$431.40
    Vishay
    5kΩ
    Rotary
    1
    1
    Panel Mount
    1W
    6.35 mm
    Linear
    -
    Conductive Plastic
    Turret
    ±20%
    157
    22.2mm
    -
    -
    -
    -
    -
    Round Shaft
    -
    -
    -
    -
    个 (以毎盒:50)
    HK$107.947
    Vishay
    2.5kΩ
    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 460-1900
    • 製造零件編號 533B1502JL
    HK$293.40
    Vishay
    5kΩ
    Rotary
    3
    1
    Panel Mount
    1W
    6.35 mm
    Linear
    -
    Wirewound
    Solder Lug
    ±5%
    533
    22.2mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    毎管:50 个
    HK$17.466
    Bourns
    1kΩ
    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 181-4453
    • 製造零件編號 3590S-4-103L
    HK$173.30
    Bourns
    10kΩ
    Linear
    10
    1
    Panel Mount
    2W
    -
    Linear
    -
    Wirewound
    Solder
    ±5%
    3590S
    20.63mm
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • RS庫存編號 842-6996P
    • 製造零件編號 6538S-1-103
    个 (以每袋裝提供)
    HK$976.60
    Bourns
    10kΩ
    Rotary
    1
    1
    Panel Mount
    1W
    3.18 mm
    -
    -
    Conductive Plastic
    Solder Turret
    ±10%
    6538
    12.7mm
    -
    -
    -
    -
    -
    Round Shaft
    -
    -
    -
    -
    • RS庫存編號 729-3464
    • 製造零件編號 RK097111020N
    HK$33.62
    Alps Alpine
    50kΩ
    Rotary
    1
    1
    Through Hole
    0.05W
    6 mm
    -
    -
    -
    Pin
    ±20%
    RK097
    15mm
    -
    -
    -
    -
    -
    Flatted Shaft
    -
    -
    -
    -
    个 (以毎盒:50)
    HK$405.862
    Bourns
    5kΩ
    Digital Display
    10
    2
    Panel Mount
    2W
    -
    -
    -
    -
    Solder Lug
    ±3%
    3680
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • RS庫存編號 770-3087
    • 製造零件編號 PDB241-GTR03-254A2
    HK$37.90
    Bourns
    250kΩ
    Rotary
    1
    1
    Panel Mount
    0.25W
    6 mm
    Audio
    -
    Carbon
    Solder Lug
    ±20%
    PDB241-GTR
    27.5mm
    -
    -
    -
    -
    -
    Knurled Shaft
    -
    -
    -
    -
    HK$8.70
    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 181-4447
    • 製造零件編號 3590S-1-103L
    HK$157.00
    Bourns
    10kΩ
    Linear
    10
    1
    Panel Mount
    2W
    -
    Linear
    -
    Wirewound
    Solder
    ±5%
    3590S
    20.62mm
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • RS庫存編號 790-4202
    • 製造零件編號 PRV6SAABJYB25104KA
    HK$110.70
    Vishay
    100kΩ
    Rotary
    1
    1
    Panel Mount
    1.22W
    3.18 mm
    Linear
    -
    Cermet
    Solder Lug
    ±20%
    PRV6
    22mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 790-4237
    • 製造零件編號 P10XXAI104KB30
    HK$105.50
    Vishay
    100kΩ
    Rotary
    1
    1
    Panel Mount
    0.5W
    3 mm
    Linear
    -
    Cermet
    Pin
    ±10%
    P10
    20mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 167-4523
    • 製造零件編號 3547S-1AA-103A
    个(每套 5)
    HK$223.98
    Bourns
    10kΩ
    Rotary
    3
    1
    Panel Mount
    1W
    6.35 mm
    Linear
    -
    Wirewound
    Solder Lug
    ±3%
    3547
    20.6mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
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