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Ohmite 0.12Ω ±10% 300W Adjustable Wire Wound Resistor ±400ppm/°C 215.9mm

Ohmite 500Ω ±10% 175W Adjustable Wire Wound Resistor ±260ppm/°C 215.9mm

Ohmite 100Ω ±10% 100W Adjustable Wire Wound Resistor ±260ppm/°C 165.1mm

Ohmite 250Ω ±10% 100W Adjustable Wire Wound Resistor ±260ppm/°C 165.1mm


Adjustable resistors, also known as potentiometers, allow a degree of control over the resistance within a circuit. This gives them an advantage over other types of [fixed resistor](/web/c/passive-components/fixed-resistors/), depending on your needs.

They are composed of a fixed resistive element, and a slider that is able to pass along the element. This is what changes the resistance of the circuit, and it is usually controlled externally.

### What are adjustable resistors used for?

Adjustable resistors are most commonly used for volume control in TV and radio. They can also be used as part of a light dimmer, to indirectly affect the level of light.

### Types of adjustable resistor

Adjustable resistors largely vary based on material

- Wirewound adjustable resistors use a coil of resistance wire, and offer the highest performance.
- Cermet adjustable resistors are composed of ceramic and metal. They can withstand high temperatures, and are often used in trimmer resistors.
- Carbon composition adjustable resistors are some of the most common types used, as they are a good all-purpose resistor.
- Conductive plastic adjustable resistors use conductive plastic ink, and have a low noise output.


Adjustable Resistors

Fixed Resistors

Passive Components

1228569899

1492797549

1805640584

1872595187

1950438482

2099506070

2911534392

2972144945

3047907070

3089561311

3379516231

3702440375

3893962904

3999174723

4084450865

482906937

573211935

607105215

630592386

1337321341

1713511683

1953764780

215561600

2212326362

245755136

2675376924

2694081498

2854130884

3031041232

3479376779

3537785963

3606191116

3676807775

3694170890

3696367266

3871454867

3980878867

4239710393

730636658

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Ohmite Adjustable Resistors

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