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

6406 產品顯示為 Variable Resistors

8 321
有庫存
  • RS庫存編號 134-930
  • 製造零件編號 PT15NV15-104A2020-S
小計(1 盒,共 400 件)
TWD7,960.00(不含稅)
有庫存
  • RS庫存編號 162-192
  • 製造零件編號 M43P501KB40
小計(1 件)
TWD109.00(不含稅)
暫時缺貨
  • RS庫存編號 162-855
  • 製造零件編號 404802692040
小計(1 件)
TWD773.00(不含稅)
庫存資訊目前無法查詢
  • RS庫存編號 169-3092
  • 製造零件編號 M64X502KB40
小計(1 盒,共 200 件)
TWD12,400.00(不含稅)
暫時無法供應
  • RS庫存編號 168-128
  • 製造零件編號 1624154-2
小計(1 件)
TWD188.00(不含稅)
有庫存
  • RS庫存編號 162-883
  • 製造零件編號 404802692030
小計(1 件)
TWD697.00(不含稅)
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)
TWD1,285.00(不含稅)
有庫存
  • RS庫存編號 737-7701P
  • 製造零件編號 H-22-6A
小計 1 件 (以盒裝提供)
TWD516.00(不含稅)
有庫存
  • RS庫存編號 167-3528
  • 製造零件編號 3224W-1-102E
小計(1 卷,共 250 件)
TWD20,725.00(不含稅)
有庫存
  • RS庫存編號 107-0785
  • 製造零件編號 3590S-2-103L
小計(1 件)
TWD503.00(不含稅)
有庫存
  • RS庫存編號 249-9200
  • 製造零件編號 RK1631110TV9
小計(1 件)
TWD205.00(不含稅)
暫時缺貨
  • RS庫存編號 225-760
  • 製造零件編號 9333
小計(1 件)
TWD496.00(不含稅)
有庫存
  • RS庫存編號 498-839
小計(1 件)
TWD53.00(不含稅)
有庫存
  • RS庫存編號 509-721
  • 製造零件編號 15A31B10
小計(1 件)
TWD1,991.00(不含稅)
有庫存
  • RS庫存編號 243-9606
  • 製造零件編號 K1-DM-B60
小計(1 件)
TWD878.00(不含稅)
有庫存
  • RS庫存編號 252-7017
  • 製造零件編號 3/05/DRNP120 006/26 /1004 /224
小計(1 包,共 5 件)
TWD127.00(不含稅)
有庫存
  • RS庫存編號 168-140
  • 製造零件編號 1623760-2
小計(1 件)
TWD190.00(不含稅)
有庫存
  • RS庫存編號 212-690
  • 製造零件編號 SGD-120-3
小計(1 件)
TWD40,545.00(不含稅)
最後的 RS 庫存
  • RS庫存編號 168-370
  • 製造零件編號 27ESA503MMF50N
小計(1 件)
TWD223.00(不含稅)
有庫存
  • RS庫存編號 173-580
  • 製造零件編號 157S103MB9002
小計(1 件)
TWD2,666.00(不含稅)
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