Potentiometers

What is a potentiometer?


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.


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.


Need ’Digital Potentiometers’?


Digital Potentiometers

Looking for peripherals for your potentiometer?


Potentiometer Knobs


Potentiometer Accessories


Potentiometer Mounting Nuts


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กำลังดูสินค้า 1 - 20 รายการจาก 237 รายการ / Viewing 1 - 20 of 237 products
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รายละเอียดสินค้า / Description ราคา / Price Maximum Resistance Potentiometer Type Number of Turns Number of Gangs Mounting Type Power Rating Shaft Diameter Electrical Taper Mounting Hole Diameter Automotive Standard Element Material Termination Style Tolerance Series
RS Stock No. 729-3432
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RK09L1220A1B
Brand :Alps Electric
THB54.87
Each
Units
100 kΩ Rotary 1 2 Through Hole 0.05W 6 mm Linear 9mm - - Pin ±20% RK09L
RS Stock No. 172-8051
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RK12L1230C1M
Brand :Alps Electric
THB36.75
Each (In a Tray of 80)
Units
20 kΩ Rotary 1 - Through Hole - 6 mm Linear 0.8mm - - Pin ±20% RK12L
RS Stock No. 729-3678
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RK12L1230C1M
Brand :Alps Electric
THB42.86
Each
Units
20 kΩ Rotary 1 2 Through Hole - 6 mm Linear 0.8mm - - Pin ±20% RK12L
RS Stock No. 172-8079
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RK09L1220A1B
Brand :Alps Electric
THB57.20
Each (In a Tray of 100)
Units
100 kΩ Rotary 1 - Panel Mount, Through Hole 0.05W 6 mm Linear 9mm - - Pin ±20% RK09L
RS Stock No. 263-3191
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RK11K1140A3L
Brand :Alps Electric
THB52.76
Each
Units
10 kΩ Rotary 1 1 Through Hole 0.05W 6 mm Linear - - Carbon Pin ±20% RK11K
RS Stock No. 154-8178
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RK11K1140A3L
Brand :Alps Electric
THB31.934
Each (In a Bag of 5)
Units
- Rotary 1 1 Through Hole 0.05W 6 mm Linear 1mm - - Solder ±20% RK11K
RS Stock No. 172-6272
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RK09D1130C2P
Brand :Alps Electric
THB21.261
Each (In a Box of 1000)
Units
10 kΩ Rotary 1 - Through Hole 0.05W 6 mm Linear 1mm - - Pin ±20% RK09D
RS Stock No. 729-3640
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RK09D1130C2P
Brand :Alps Electric
THB22.56
Each
Units
10 kΩ Rotary 1 1 Through Hole 0.05W 6 mm Linear 1mm - - Pin ±20% RK09D
RS Stock No. 172-6430
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RK27112MC01P
Brand :Alps Electric
THB1,033.80
Each (In a Tray of 15)
Units
50 kΩ Rotary 1 - Panel Mount, Through Hole 0.05W 6 mm Logarithmic 9mm - Carbon Pin ±20% RK27
RS Stock No. 234-6617
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RK27112MC01P
Brand :Alps Electric
THB855.00
Each
Units
50 kΩ Rotary 1 - Panel Mount, Through Hole 0.05W 6 mm Logarithmic 9mm - Carbon Pin ±20% RK27
RS Stock No. 729-3404
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RK09L112003P
Brand :Alps Electric
THB42.72
Each
Units
20 kΩ Rotary 1 1 Through Hole 0.05W 6 mm Linear 9mm - - Pin ±20% RK09L
RS Stock No. 172-7667
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RK09712200MC
Brand :Alps Electric
THB99.417
Each (In a Tray of 120)
Units
10 kΩ Rotary 1 - Panel Mount, Through Hole 0.05W 6 mm Logarithmic 7mm - - Pin ±20% RK097
RS Stock No. 729-3492
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RK09712200MC
Brand :Alps Electric
THB92.15
Each
Units
10 kΩ Rotary 1 2 Through Hole 0.05W 6 mm - 7mm - - Pin ±20% RK097
RS Stock No. 172-6336
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RK09L112003P
Brand :Alps Electric
THB52.56
Each (In a Tray of 100)
Units
20 kΩ Rotary 1 - Panel Mount, Through Hole 0.05W 6 mm Linear 9mm - - Pin ±20% RK09L
RS Stock No. 729-3410
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RK09L1140A66
Brand :Alps Electric
THB72.39
Each
Units
10 kΩ Rotary 1 1 Through Hole 0.05W 6 mm Linear 9mm - - Pin ±20% RK09L
RS Stock No. 172-8072
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RK09L1140A66
Brand :Alps Electric
THB52.47
Each (In a Tray of 100)
Units
10 kΩ Rotary 1 - Panel Mount, Through Hole 0.05W 6 mm Linear 9mm - - Pin ±20% RK09L
RS Stock No. 172-8058
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RK11K1120A2B
Brand :Alps Electric
THB43.813
Each (In a Tray of 80)
Units
10 kΩ Rotary 1 - Panel Mount, Through Hole 0.05W 6 mm Linear - - - Pin ±20% RK11K
RS Stock No. 249-9294
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RK1631210AY7
Brand :Alps Electric
THB132.14
Each
Units
10 kΩ Rotary 1 - Panel Mount, Through Hole 0.1W 6 mm Linear 7.35mm - - Pin ±20% RK163
RS Stock No. 172-7723
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RK27112A00CF
Brand :Alps Electric
THB557.812
Each (In a Box of 500)
Units
50 kΩ Rotary 1 - Panel Mount, Through Hole 0.05W 6 mm Logarithmic 9mm - - Pin ±20% RK27
RS Stock No. 263-3258
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.RK27112A00A6
Brand :Alps Electric
THB693.12
Each
Units
20 kΩ Rotary 1 - Panel Mount, Through Hole 0.05W 6 mm Logarithmic 9mm - - Pin ±20% RK27