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

6404 產品顯示為 Variable Resistors

3 321
有庫存
  • RS庫存編號 465-9820
小計(1 件)
TWD36.00(不含稅)
有庫存
  • RS庫存編號 769-2182
  • 製造零件編號 PV36W501C01B00
小計(1 件)
TWD55.00(不含稅)
有庫存
  • RS庫存編號 463-8536
小計(1 包,共 5 件)
TWD264.00(不含稅)
有庫存
  • RS庫存編號 522-0877
  • 製造零件編號 3362P-1-101LF
小計(1 件)
TWD26.00(不含稅)
有庫存
  • RS庫存編號 270-670
  • 製造零件編號 MFA46L-1/4
小計(1 件)
TWD2,891.00(不含稅)
有庫存
  • RS庫存編號 737-7726P
  • 製造零件編號 PDB182-K220K-104B
小計 1 件 (以盒裝提供)
TWD62.00(不含稅)
有庫存
  • RS庫存編號 842-7021
小計(1 件)
TWD233.00(不含稅)
有庫存
  • RS庫存編號 181-4466
  • 製造零件編號 PVG3A103C01R00
小計(1 組,共 10 件)
TWD350.00(不含稅)
有庫存
  • RS庫存編號 474-9260
  • 製造零件編號 RJ-13PR 1k Ohm (102)
小計(1 件)
TWD149.00(不含稅)
有庫存
  • RS庫存編號 277-0212
  • 製造零件編號 M43P103KB30T601
小計(1 件)
TWD234.00(不含稅)
最後的 RS 庫存
  • RS庫存編號 374-7049
  • 製造零件編號 T63YB202KT20
小計(1 件)
TWD69.00(不含稅)
暫時缺貨
  • RS庫存編號 521-9108
  • 製造零件編號 3006P-1-204LF
小計(1 件)
TWD45.00(不含稅)
有庫存
  • RS庫存編號 521-9271
  • 製造零件編號 3266W-1-501LF
小計(1 件)
TWD110.00(不含稅)
有庫存
  • RS庫存編號 522-0215
  • 製造零件編號 3296Y-1-502LF
小計(1 件)
TWD66.00(不含稅)
有庫存
  • RS庫存編號 691-7689
  • 製造零件編號 3386V-1-502LF
小計(1 件)
TWD55.00(不含稅)
有庫存
  • RS庫存編號 691-2586
  • 製造零件編號 3269W-1-502GLF
小計(1 件)
TWD142.00(不含稅)
有庫存
  • RS庫存編號 769-2189
  • 製造零件編號 PV36W204C01B00
小計(1 件)
TWD54.00(不含稅)
有庫存
  • RS庫存編號 796-4939
  • 製造零件編號 3214J-1-102E
小計(1 件)
TWD81.00(不含稅)
有庫存
  • RS庫存編號 787-0566
  • 製造零件編號 3362P-1-302LF
小計(1 件)
TWD25.00(不含稅)
有庫存
  • RS庫存編號 107-6878
  • 製造零件編號 H83P
小計(1 件)
TWD106.00(不含稅)
每頁顯示的結果