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

6695 產品顯示為 Variable Resistors

排序方式
321 的 335
有庫存
  • RS庫存編號 374-6838
  • 製造零件編號 T7YA224MT20
小計(1 包,共 5 件)
TWD632.00(不含稅)
TWD126.40/件
有庫存
  • RS庫存編號 374-7184P
  • 製造零件編號 T63XB102KT20
小計 1 件 (以管提供)
TWD114.00(不含稅)
TWD114.00/件
有庫存
  • RS庫存編號 252-7019
  • 製造零件編號 3/05/DRP100 006/26/180 /1004 /233
小計(1 包,共 5 件)
TWD142.00(不含稅)
TWD28.40/件
暫時缺貨
  • RS庫存編號 522-1044
  • 製造零件編號 3362W-1-105LF
小計(1 件)
TWD28.00(不含稅)
TWD28.00/件
有庫存
  • RS庫存編號 299-5051
  • 製造零件編號 3/03/TPN130-006/237/232
小計(1 包,共 5 件)
TWD129.00(不含稅)
TWD25.80/件
有庫存
  • RS庫存編號 168-140
  • 製造零件編號 1623760-2
小計(1 件)
TWD220.00(不含稅)
TWD220.00/件
暫時缺貨
  • RS庫存編號 522-3012P
  • 製造零件編號 3540S-1-501L
小計 1 件 (以袋裝提供)
TWD1,017.00(不含稅)
TWD1,017.00/件
最後的 RS 庫存
  • RS庫存編號 181-234
  • 製造零件編號 T16SH-M04N-103A2020-TA
小計(1 袋,共 2 件)
TWD475.00(不含稅)
TWD237.50/件
有庫存
  • RS庫存編號 186-031
  • 製造零件編號 M70Y202KB25
小計(1 件)
TWD2,223.00(不含稅)
TWD2,223.00/件
有庫存
  • RS庫存編號 522-3034
  • 製造零件編號 3540S-1-503L
小計(1 件)
TWD1,129.00(不含稅)
TWD1,129.00/件
有庫存
  • RS庫存編號 186-047P
  • 製造零件編號 M70Y502KB25
小計 1 件 (以袋裝提供)
TWD1,522.00(不含稅)
TWD1,522.00/件
有庫存
  • RS庫存編號 653-027
  • 製造零件編號 TSM41YJ105KR05
小計(1 組,共 1 件)
TWD153.00(不含稅)
TWD153.00/組
有庫存
  • RS庫存編號 329-048
  • 製造零件編號 P16FNP104MARSD
小計(1 件)
TWD767.00(不含稅)
TWD767.00/件
最後的 RS 庫存
  • RS庫存編號 298-413
  • 製造零件編號 P16FNP103MACV1D
小計(1 盒,共 20 件)
TWD13,308.00(不含稅)
TWD665.40/件
暫時無法供應
  • RS庫存編號 277-630
  • 製造零件編號 PA16FNP222MA
小計(1 盒,共 20 件)
TWD8,982.00(不含稅)
TWD449.10/件
有庫存
  • RS庫存編號 329-029
  • 製造零件編號 P16NP472MAB15CV1F
小計(1 件)
TWD634.00(不含稅)
TWD634.00/件
最後的 RS 庫存
  • RS庫存編號 425-357
  • 製造零件編號 TS7Y503KR32
小計(1 卷,共 750 件)
TWD54,900.00(不含稅)
TWD73.20/件
最後的 RS 庫存
  • RS庫存編號 298-404
  • 製造零件編號 P16FNP102KACV1D
小計(1 盒,共 20 件)
TWD14,518.00(不含稅)
TWD725.90/件
有庫存
  • RS庫存編號 302-691P
小計 20 件 (以袋裝提供)
TWD480.00(不含稅)
TWD24.00/件
有庫存
  • RS庫存編號 425-356
  • 製造零件編號 TS7Y203KR32
小計(1 組,共 1 件)
TWD103.00(不含稅)
TWD103.00/組
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