Potentiometers | Slide & Rotary | Trimpots | RS
最近搜索

    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

    2589 產品顯示為 Potentiometers

    • RS庫存編號 468-8705
    • 製造零件編號 05.061.5100
    HK$32.70
    Radiohm
    10kΩ
    Rotary
    -
    1
    Panel Mount
    0.4W
    6 mm
    Linear
    -
    Carbon
    Solder Lug
    ±20%
    POTM
    50mm
    -
    -
    -
    -
    -
    Round Shaft
    -
    -
    -
    -
    个(每套 10)
    HK$139.967
    NIDEC COPAL ELECTRONICS GMBH
    -
    Rotary
    10
    1
    -
    2W
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    • 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
    -
    -
    -
    -
    • RS庫存編號 692-8503P
    • 製造零件編號 3549S-1AA-101A
    个 (以每卷裝提供)
    HK$216.30
    Bourns
    100Ω
    Rotary
    10
    1
    Panel Mount
    2W
    6.35 mm
    Linear
    -
    Wirewound
    Solder Lug
    ±3%
    3549
    20.6mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    HK$47.30
    Alps Alpine
    100kΩ
    Rotary
    1
    -
    Panel Mount, Through Hole
    0.05W
    6 mm
    Logarithmic
    -
    -
    Pin
    ±20%
    RK163
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    -
    个(每套 100)
    HK$5.33
    Bourns
    1kΩ
    Rotary
    1
    1
    Panel Mount, Through Hole
    0.05W
    6 mm
    Linear
    -
    Carbon
    PC Pin
    ±20%
    PTV09
    25mm
    -
    -
    -
    -
    -
    Flatted Shaft
    -
    -
    -
    -
    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 795-4840
    • 製造零件編號 PRV6SAABJYB25103KL
    HK$143.10
    Vishay
    10kΩ
    Rotary
    -
    1
    Panel Mount
    1.5W
    3.18 mm
    Logarithmic
    -
    Cermet
    Solder Lug
    ±10%
    PRV6
    22mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    HK$226.60
    Vishay
    10kΩ
    Rotary
    10
    1
    Bushing Mount
    2W
    6.35 mm
    Linear
    -
    Wirewound
    Turret
    ±5%
    534
    20.6mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 230-7061
    • 製造零件編號 91A1A-B28-A22L
    个(每套 45)
    HK$38.633
    Bourns
    250kΩ
    Rotary
    1
    1
    -
    2W
    6.35 mm
    Linear
    -
    Cermet
    -
    ±10%
    -
    -
    -
    -
    Slotted
    -
    -
    -
    -
    -
    -
    -
    • RS庫存編號 460-1922
    • 製造零件編號 535B1103JC
    HK$234.90
    Vishay
    10kΩ
    Rotary
    5
    1
    Panel Mount
    1.5W
    6.35 mm
    Linear
    -
    Wirewound
    Solder Lug
    ±5%
    535
    22.2mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 460-7510
    • 製造零件編號 534B1102JL
    HK$288.80
    Vishay
    1kΩ
    Rotary
    10
    1
    Panel Mount
    2W
    6.35 mm
    Linear
    -
    Wirewound
    Solder Lug
    ±5%
    534
    20.6mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    HK$23.10
    Bourns
    500kΩ
    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 770-3062
    • 製造零件編號 PDB182-GTRB1-254MN
    HK$18.20
    Bourns
    250kΩ
    Rotary
    -
    2
    Panel Mount
    0.6W
    6 mm
    Audio
    -
    Carbon
    Solder Lug
    ±20%
    PDB182-GTRB
    19mm
    -
    -
    -
    -
    -
    Knurled Shaft
    -
    -
    -
    -
    • RS庫存編號 790-4445
    • 製造零件編號 PE30L0FL103KAB
    HK$315.80
    Vishay
    10kΩ
    Rotary
    1
    1
    Panel Mount
    3W
    6 mm
    Linear
    -
    Cermet
    Solder Lug
    ±10%
    PE30
    25mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    • RS庫存編號 162-798
    • 製造零件編號 404802692034
    HK$139.70
    TE Connectivity
    470Ω
    Rotary
    1
    1
    Panel Mount
    2W
    6.35 mm
    Linear
    -
    Cermet
    Pin
    ±10%
    M
    25.4mm
    -
    -
    -
    -
    -
    Round Shaft
    -
    -
    -
    -
    • RS庫存編號 162-833
    • 製造零件編號 404802696038
    HK$193.10
    TE Connectivity
    10kΩ
    Rotary
    1
    1
    Panel Mount
    2W
    6.35 mm
    Linear
    -
    Cermet
    Pin
    ±10%
    M
    25.4mm
    -
    -
    -
    -
    -
    Round Shaft
    -
    -
    -
    -
    HK$107.70
    Vishay
    5kΩ
    Rotary
    1
    1
    Panel Mount, Through Hole
    1W
    6.35 mm
    Linear
    -
    Cermet
    Pin
    ±10%
    249
    22.2mm
    -
    -
    -
    -
    -
    Slotted Shaft
    -
    -
    -
    -
    每頁顯示的結果