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

6680 產品顯示為 Variable Resistors

排序方式
9 334
有庫存
  • RS庫存編號 729-3454
  • 製造零件編號 RK09L12D0A1T
小計(1 件)
TWD108.00(不含稅)
TWD108.00/件
暫時無法供應
  • RS庫存編號 729-3404
  • 製造零件編號 RK09L112003P
小計(1 件)
TWD79.00(不含稅)
TWD79.00/件
暫時無法供應
  • RS庫存編號 729-3414
  • 製造零件編號 RK09L1140A5P
小計(1 件)
TWD82.00(不含稅)
TWD82.00/件
有庫存
  • RS庫存編號 842-7131
小計(1 件)
TWD697.00(不含稅)
TWD697.00/件
有庫存
  • RS庫存編號 842-7021
小計(1 件)
TWD240.00(不含稅)
TWD240.00/件
暫時缺貨
  • RS庫存編號 167-0124
  • 製造零件編號 6657S-1-103
小計(1 托盤,共 25 件)
TWD34,595.00(不含稅)
TWD1,383.80/件
最後的 RS 庫存
  • RS庫存編號 167-9349
  • 製造零件編號 860B1103
小計(1 盒,共 10 件)
TWD90,292.00(不含稅)
TWD9,029.20/件
暫時缺貨
  • RS庫存編號 230-7061
  • 製造零件編號 91A1A-B28-A22L
小計(1 托盤,共 45 件)
TWD8,505.00(不含稅)
TWD189.00/件
有庫存
  • RS庫存編號 182-5656
  • 製造零件編號 M-1305 5K
小計(1 件)
TWD777.00(不含稅)
TWD777.00/件
有庫存
  • RS庫存編號 182-5682
  • 製造零件編號 JP-30 1K
小計(1 件)
TWD1,687.00(不含稅)
TWD1,687.00/件
暫時無法供應
  • RS庫存編號 252-0382
  • 製造零件編號 RV30YN20S B302
小計(1 件)
TWD258.00(不含稅)
TWD258.00/件
有庫存
  • RS庫存編號 498-823
小計(1 件)
TWD278.00(不含稅)
TWD278.00/件
有庫存
  • RS庫存編號 259-6991
小計(1 包,共 5 件)
TWD418.00(不含稅)
TWD83.60/件
暫時缺貨
  • RS庫存編號 243-9550
  • 製造零件編號 021-2325
小計(1 盒,共 100 件)
TWD19,280.00(不含稅)
TWD192.80/件
有庫存
  • RS庫存編號 463-8463
小計(1 件)
TWD163.00(不含稅)
TWD163.00/件
有庫存
  • RS庫存編號 783-0205
  • 製造零件編號 PKD70B101/4
小計(1 件)
TWD132.00(不含稅)
TWD132.00/件
有庫存
  • RS庫存編號 467-6730
小計(1 包,共 5 件)
TWD105.00(不含稅)
TWD21.00/件
有庫存
  • RS庫存編號 173-580
  • 製造零件編號 157S103MB9002
小計(1 件)
TWD2,856.00(不含稅)
TWD2,856.00/件
有庫存
  • RS庫存編號 521-9760
  • 製造零件編號 3296W-1-254LF
小計(1 件)
TWD72.00(不含稅)
TWD72.00/件
正在逐步停售
  • RS庫存編號 729-3432
  • 製造零件編號 RK09L1220A1B
小計(1 件)
TWD93.00(不含稅)
TWD93.00/件
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