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.



Looking for peripherals for your potentiometer?



Potentiometer Knobs

Potentiometer Accessories

Potentiometer Mounting Nuts

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กำลังดูสินค้า 1 - 20 รายการจาก 147 รายการ / Viewing 1 - 20 of 147 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 Element Material Termination Style Tolerance Series Shaft Length
RS Stock No. 162-811
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.404802692036
THB757.54
Each
Units
2.2kΩ Rotary 1 1 Panel Mount 2W 6.35 mm Linear - Cermet Pin ±10% M 25.4mm
RS Stock No. 502-8621
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TW1502KA
THB348.53
Each
Units
5kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm
RS Stock No. 135-5048
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TW1502KA
THB218.46
Each (In a Box of 500)
Units
5kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm
RS Stock No. 135-5046
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TW1102KA
THB218.46
Each (In a Box of 500)
Units
1kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm
RS Stock No. 502-8609
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TW1102KA
THB388.48
Each
Units
1kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm
RS Stock No. 162-899
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.404802692042
THB623.76
Each
Units
1MΩ Rotary 1 1 Panel Mount 2W 6.35 mm Linear - Cermet Pin ±10% M 25.4mm
RS Stock No. 162-883
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.404802692030
THB604.43
Each
Units
470kΩ Rotary 1 1 Panel Mount 2W 6.35 mm Linear - Cermet Pin ±10% M 25mm
RS Stock No. 377-4811
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.17PCSA474MC19P
THB206.70
Each
Units
470kΩ Rotary 1 1 Panel Mount 0.25W 6 mm Linear - Carbon Pin ±20% 17P 19mm
RS Stock No. 161-5162
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.17PCSA474MC19P
THB160.808
Each (In a Box of 100)
Units
470kΩ Rotary 1 1 Panel Mount 0.25W 6 mm Linear - Carbon Pin ±20% 17P 19mm
RS Stock No. 135-5049
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TW1103KA
THB245.73
Each (In a Box of 500)
Units
10kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm
RS Stock No. 135-5047
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TW1252KA
THB218.46
Each (In a Box of 500)
Units
2.5kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm
RS Stock No. 168-358
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.27ESA502MMF50N
THB216.65
Each
Units
5kΩ Rotary 1 2 Panel Mount 0.4W 6.35 mm Linear - Carbon Solder Lug ±20% 27 50mm
RS Stock No. 168-140
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.1623760-2
THB158.46
Each
Units
10kΩ Rotary 1 1 Panel Mount 0.4W 6.35 mm Linear - Carbon Solder Lug ±20% 23 50mm
RS Stock No. 136-1808
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TW1100KA
THB266.51
Each (In a Box of 500)
Units
10Ω Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm
RS Stock No. 163-9733
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TW1500KA
THB226.409
Each (In a Box of 500)
Units
50Ω Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm
RS Stock No. 502-8570
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TW1251KA
THB373.11
Each
Units
250Ω Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm
RS Stock No. 135-4432
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.1623760-2
THB111.017
Each (In a Box of 200)
Units
10kΩ Rotary 1 1 Panel Mount 0.4W 6.35 mm Linear - Carbon Solder Lug ±20% 23 50mm
RS Stock No. 502-8637
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TW1103KA
THB453.79
Each
Units
10kΩ Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm
RS Stock No. 502-8558
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TW1500KA
THB426.05
Each
Units
50Ω Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm
RS Stock No. 502-8536
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.TW1100KA
THB408.36
Each
Units
10Ω Rotary 1 1 Panel Mount 1W 6.35 mm Linear - Wirewound Solder Lug ±10% TW 15mm