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attributes.ProductType

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attributes.ShaftType

attributes.Knob_Height

attributes.Shaft_Diameter

attributes.Body_Colour

attributes.Cap_Size

attributes.Indicator_Colour

attributes.Colour

attributes.Depth

attributes.For_Use_With

attributes.Number_of_Turns

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Bourns 22.8 mm Knob Diameter Black, Chrome Potentiometer Knob for 3.2 mm Shaft Circular, H-516-3A

Bourns 22.8 mm Knob Diameter Black, Chrome Potentiometer Knob for 6.35 mm Shaft Circular


A potentiometer knob is an accessory that is used as a control knob for a potentiometer. They sit over the top of the potentiometer to enable easy control of electrical devices, such as audio equipment.

The knobs are available in a range of materials to suit various applications. Potentiometers knobs are commonly manufactured from plastic (often with a brass insert) or aluminium. Some feature soft touch rubber finishes to help with grip. Plastic knobs are generally black but may feature a coloured cap or indicator to help differentiate their use.

### How do potentiometer knobs work?

Potentiometer knobs sit directly on the potentiometer shaft. Many knobs are simply push on and are easily fitted. Others use a fixing such as a nut, grub screw or blind set screw to fix them in place. The knob can then be used to turn the potentiometer, like a volume control knob on a stereo.

It is important that you check the shaft of your potentiometer is compatible with the knob. For example, smooth shaft, D-shaped shaft or a knurled shaft can work with different knobs.

### Types of potentiometer knob:

A huge variety of potentiometer knobs are available to suit virtually any application. When choosing the right knob for your potentiometer, you must always check the shaft diameter and shape of the potentiometer. Most knobs are cylindrical, but rectangular shaped knobs are available for slider potentiometers. The knob diameter is also important to ensure that it fits your application. Potentiometer knobs are available in a wide range of diameters, for example 30 mm or 40 mm.

Some potentiometer knobs feature a small skirt at the bottom, which can have numbers around it to indicate number of turns. Others feature a pointer or coloured indicator, which can be helpful for seeing how far a potentiometer has been turned and where it is pointing to.

Some potentiometer knobs are also multi-turn. They may feature a locking mechanism and a turn counter which shows the number of rotations of the potentiometer knob.

Where are potentiometer knobs used?

- Audio gear
- Amplifiers
- Lighting


Potentiometer Knobs

Variable Resistors

Passive Components

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1141188117

1370019343

1419482333

1422205366

1492797549

1743139940

1852296854

1852297226

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2228588789

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242923860

2491196911

2600241038

2646997557

2892976822

2911534392

3242846696

3437032725

3458730773

3710679228

3893962904

3986300536

3986300631

4195147118

482906937

517998920

607105215

630592386

803858637

1337321341

1713511683

1953764780

215561600

2212326362

245755136

2602282426

2675376924

2694081498

2801626310

2854130884

3031041232

3141911626

3359984903

3479376779

3503142162

3537785963

3606191116

3676807775

3696367266

3792969765

3841872179

3871454867

3929125222

3980878867

4085774260

4185424055

4239710393

503843782

650378987

730636658

Development Tools & Single Board Computers

Raspberry Pi, Arduino, ROCK, STEM Education & Development Tools

Electronic Components, Power & Connectors

Engineering Materials & Industrial Hardware

Pneumatic Counters, Logic Controllers & Timers

Electronics Cleaners & Protective Coatings

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Bourns Potentiometer Knobs | RS


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