Variable Resistors

Browse our wide range of variable resistors including potentiometers, rheostats and thermistors from market leading electronics brands including Vishay, Bourns, EPCOS and RS Pro.

What are variable resistors and how do they work?

Variable resistors are electrical components that give you control over the current flow through an electric circuit. Variable resistors can be used in a variety of different types of devices, including the volume and gain control on electric instruments such as guitars and basses. The Variable resistors have a maximum and minimum value which can alter the current. Variable resistors are extremely important, without them you cannot control your circuit.

What does a variable resistor do in a circuit?

A variable resistor's role in a circuit is to allow the amount of resistance to be changed. When resistance decreases the flow of the current increases. There are different types of variable resistors that can be used for different functions and environments.

Types of resistors

The three most common types of variable resistors are:

  • Potentiometers The most common type of variable resistor is the potentiometers. The potentiometer can be used as a voltage regulator by introducing a variable amount of resistance into a circuit or as a means of adjusting the power in a circuit. Potentiometers can also be known as "pot" or, more specifically, slider pot, trimmer pot or thumbwheel pot.
  • Rheostat A rheostat is a variable resistor which is used to control current within an electrical circuit. They can control the resistance without interrupting it. Unlike the Potentiometer the Rheostat only uses 2 leads. A connection is made to one end of the resistive element and the other connection is made to the wiper end of the variable resistor. Rheostats are commonly used in motor control.
  • Trimmer Resistors Unlike other resistors, a trimmer resistor is a smaller component that is used to be placed within your circuit and not adjusted again. They are also known as trimpots.

Other types of variable resistors

include:

  • Ceramic Transient Voltage Suppressors
  • Metal Oxide Varistors
  • Potentiometer Accessories
  • Potentiometer Knob
  • Potentiometer Mounting Nuts
  • Rheostat Dials
  • Thermistors
  • Trimmer Resistor Adjustment Tools
  • Trimmer Resistor Mount Adapters
Ceramic Transient Voltage Suppressors
Ceramic Transient Voltage Suppressors
Potentiometer Accessories
Potentiometer Accessories
Potentiometer Knobs
Potentiometer Knobs
Potentiometers
Potentiometers
Rheostat Accessories
Rheostat Accessories
Rheostat Knobs
Rheostat Knobs
Rheostats
Rheostats
Trimmer Potentiometer Accessories
Trimmer Potentiometer Accessories
Trimmer Potentiometers
Trimmer Potentiometers

6397 產品顯示為 Variable Resistors

1 of 320
In Stock
Eaton, 229489
  • RS Stock No. 620-6024
  • Mfr. Part No. M22-R1K
Subtotal (1 unit)
TWD1,690.00(exc. GST)
TWD1,690.00/unit
In Stock
Bourns Cermet Potentiometer 93 Series with a 6 mm Dia. Shaft 100Ω ±10% 2W ±150ppm/°C, Linear
  • RS Stock No. 522-5254
  • Mfr. Part No. 93R1A-R22-A05L
Subtotal (1 unit)
TWD225.00(exc. GST)
TWD225.00/unit
In Stock
Bourns Digital Potentiometer 3682S Series 10kΩ ±3% 2W ±100ppm/°C, Pushbutton, Panel Mount
  • RS Stock No. 248-6759
  • Mfr. Part No. 3682S-1-103L
Subtotal (1 unit)
TWD845.00(exc. GST)
TWD845.00/unit
In Stock
Bourns 322X Series 12-Turn SMD Cermet Trimmer Resistor with Gull Wing Terminations, 2kΩ ±10% 0.25W ±100ppm/°C
  • RS Stock No. 796-4894
  • Mfr. Part No. 3224X-1-202E
Subtotal (1 unit)
TWD103.00(exc. GST)
TWD103.00/unit
Limited stock
Spindle Lock 13.51mm, For Use With Standard 0.375 in Bushes with 32 TPI White Thread & 0.25 in Shaft
  • RS Stock No. 482-2450
Subtotal (1 pack of 5 units)
TWD206.00(exc. GST)
TWD41.20/unit
In Stock
TE Connectivity Cermet Potentiometer M Series with a 6.34 mm Dia. Shaft 470kΩ ±10% 2W, Panel Mount
  • RS Stock No. 162-883
  • Mfr. Part No. 404802692030
Subtotal (1 unit)
TWD515.00(exc. GST)
TWD515.00/unit
In Stock
Copal Electronics SMD Cermet Trimmer Resistor with Gull Wing Terminations, 10kΩ ±20% 0.125W ±100ppm/°C
  • RS Stock No. 474-8879
  • Mfr. Part No. ST-32EH 10k?
Subtotal (1 pack of 5 units)
TWD295.00(exc. GST)
TWD59.00/unit
Limited stock
RS PRO 41.9mm Black Potentiometer Knob for 6.35mm Shaft
  • RS Stock No. 581-947
Subtotal (1 pack of 5 units)
TWD425.00(exc. GST)
TWD85.00/unit
In Stock
Vishay 46 mmSilver Potentiometer Knob for 6.35 mm Shaft Circular, 21A11B10
  • RS Stock No. 107-3138
  • Mfr. Part No. 21A11B10
Subtotal (1 unit)
TWD980.00(exc. GST)
TWD980.00/unit
Temporarily out of stock
Potentiometer 1 turn wirewound 1K 10% 1W
  • RS Stock No. 842-7030
Subtotal (1 unit)
TWD175.00(exc. GST)
TWD175.00/unit
Limited stock
RS PRO 29.5mm Black Potentiometer Knob for 6.35mm Shaft
  • RS Stock No. 581-919
Subtotal (1 pack of 5 units)
TWD430.00(exc. GST)
TWD86.00/unit
In Stock
Through Hole Trimmer Potentiometer 0.5 W Top Adjust Bourns, 3329
  • RS Stock No. 522-0754P
  • Mfr. Part No. 3329H-1-202LF
Subtotal 1 unit (supplied in a tube)
TWD54.00(exc. GST)
TWD54.00/unit
Temporarily out of stock
Potentiometer 1 turn wirewound 5K 10% 1W
  • RS Stock No. 842-7024
Subtotal (1 unit)
TWD175.00(exc. GST)
TWD175.00/unit
In Stock
RS PRO 21.3mm Black Potentiometer Knob for 6mm Shaft
  • RS Stock No. 463-8508
Subtotal (1 unit)
TWD64.00(exc. GST)
TWD64.00/unit
In Stock
Alps Alpine 10kΩ Rotary Potentiometer 2-Gang Through Hole, RK09712200HA
  • RS Stock No. 729-3505
  • Mfr. Part No. RK09712200HA
Subtotal (1 unit)
TWD100.00(exc. GST)
TWD100.00/unit
In Stock
Through Hole Trimmer Potentiometer 0.75 W Side Adjust Bourns, 3006
  • RS Stock No. 521-9085
  • Mfr. Part No. 3006P-1-202LF
Subtotal (1 unit)
TWD44.00(exc. GST)
TWD44.00/unit
In Stock
RS PRO 29.8mm Black Potentiometer Knob for 6mm Shaft Splined
  • RS Stock No. 777-7331
Subtotal (1 unit)
TWD103.00(exc. GST)
TWD103.00/unit
In Stock
Bourns 10kΩ Slide Slide Potentiometer 2-Gang Through Hole, PTA6044-2015CPA103
  • RS Stock No. 770-3096
  • Mfr. Part No. PTA6044-2015CPA103
Subtotal (1 unit)
TWD85.00(exc. GST)
TWD85.00/unit
In Stock
Copal Electronics 14-Turn Through Hole Cermet Trimmer Resistor with Pin Terminations, 500Ω ±10% 0.25W ±100ppm/°C
  • RS Stock No. 474-7236
  • Mfr. Part No. RJ-5EW 500?
Subtotal (1 unit)
TWD192.00(exc. GST)
TWD192.00/unit
In Stock
Bourns Conductive Plastic Potentiometer 3310H-001 Series with a 3.18 mm Dia. Shaft 10kΩ ±20% 0.25W ±1000ppm/°C, Linear
  • RS Stock No. 522-0546
  • Mfr. Part No. 3310H-001-103L
Subtotal (1 unit)
TWD199.00(exc. GST)
TWD199.00/unit
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