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Potentiometer Knobs

Potentiometer knobs: A potentiometer knob is a small, cylindrical knob with a scale attached and usually mounted on the outside of another wheel. Potentiometers are used to control electrical and electronic devices and vice versa. They are often used as volume controls for audio, and the resistance of the potentiometer changes as the volume is adjusted. However, these versatile components are not limited to just audio. The article further demonstrates the applications of these knobs in detail.

Types of potentiometers:

Several commercial potentiometer knobs are available in the market, each with pros and cons. Common knobs include push-on, knurled knob (smooth shaft), and D-shaped knob with a rounded bottom.

These knobs have two distinct parts: a body and a cavity for the shaft. The body is generally made of plastic and can be purchased at any local electronics store. Some potentiometers have cylindrical and rectangular shafts. You need to match the diameter of the knob to the shaft of your potentiometer. If the knobs are too small, you can use coloured or pointer potentiometers. They come in a variety of diameters. These knobs are ideal for many devices, including domestic light dimmers, and can be used with knurled or D-style shafts.

The most common potentiometer type is the log-pot used in audio power amplifiers and uses logarithmic motion to regulate volumes. The push-pull potentiometer is another common potentiometer mostly employed for electric guitars. Its threaded rod has a diameter of 6 and 6.7mm. The lever is used to adjust the volume and is often lightweight on electric guitar. 

Applications of Potentiometers: 

  • A potentiometer has various applications in different domains. 
  • It is a device that adjusts the resistance of a circuit. 
  • It is used to adjust a voltage or a current. 
  • It can be used to control the brightness of a light bulb
  • The most common uses for a potentiometer are displacement-sensitive devices and motion-control devices. This is because a motor-driven potentiometer can be a function generator, and the angle at which the shaft rotates can be represented by a signal.
  • Potentiometers are popular in consumer electronics, where they are used to adjust the volume of an audio signal. 
  • Potentiometers are an inexpensive and simple way to control a signal. 
  • They can also be used as angle sensors, light dimmers, speed controls, and even as angle sensors. 
  • Potentiometers are used in musical instruments to set the volume or timbre of the instruments.
  • In addition, they can also be used as temperature controls.

Conclusion:

Besides all the applications explained above, the materials used in these are different. Some potentiometer knobs are graphite, carbon-based materials, and a resistive element made of graphite. In addition to their haptic properties, they have many unique designs, different types and diameters, and styles. You need to select the correct one for your appliances or devices to be used with. Using a digital calliper, a genius invention that allows quick, precise measurements in inches or millimeters and a sliding ruler, you can measure the diameter of a shaft or the inside diameter of a knob.


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N151-BLK, Sifam
1388 In Stock
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£ 0.98
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£ 0.93
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£ 0.85
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SP151 125 BLACK, Sifam
48 In Stock
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£ 3.14
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£ 2.83
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£ 2.51
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3/03/TPN130-006/237/230, Sifam
263 In Stock
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£ 0.53
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£ 0.50
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£ 0.46
TE Connectivity
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PKES60B1/8, TE Connectivity
285 In Stock
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£ 3.02
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£ 2.80
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£ 2.63
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SP151 250 BLACK, Sifam
108 In Stock
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£ 3.21
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£ 2.90
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£ 2.57
TE Connectivity
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PKG100B1/4, TE Connectivity
20 In Stock
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£ 4.69
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£ 4.37
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£ 4.09
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05 LK121 04, Sifam
783 In Stock
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£ 0.38
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£ 0.36
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£ 0.33
Bourns
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H-516-6M, Bourns
98 In Stock
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£ 5.09
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£ 4.73
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£ 4.43
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P150BK, Sifam
188 In Stock
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£ 0.27
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£ 0.26
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£ 0.23
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040-1065, Elma
98 In Stock
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£ 1.06
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3/05/DRNP120 006/26 /1004 /224, Sifam
113 In Stock
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£ 0.71
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£ 0.61
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£ 0.54
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DR110 006/26 BLACK/005, Sifam
98 In Stock
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£ 0.71
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£ 0.61
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£ 0.54
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H-22-6M, Bourns
148 In Stock
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£ 8.69
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£ 8.08
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£ 7.56
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21A11B10, Vishay
1208 In Stock
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£ 43.48
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£ 41.31
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PKD70B101/4, TE Connectivity
583 In Stock
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£ 3.82
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£ 3.54
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£ 3.33
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S290250-BLK, Sifam
438 In Stock
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£ 3.62
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£ 3.27
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£ 2.89
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S291 250BK, Sifam
48 In Stock
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£ 4.19
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£ 3.70
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£ 2.93
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S290006-BLK, Sifam
168 In Stock
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£ 3.21
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S211 250BK, Sifam
238 In Stock
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£ 3.00
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£ 2.38
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C211-GRY, Sifam
3008 In Stock
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£ 0.46
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4/02 LK110 04, Sifam
1038 In Stock
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£ 0.42
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£ 0.37
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KLN1250B1/4, TE Connectivity
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£ 18.51
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£ 17.21
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£ 16.10
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PKG40B1/8, TE Connectivity
238 In Stock
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£ 2.15
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£ 2.00
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£ 1.88
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KN501BA1/8, TE Connectivity
22 In Stock
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£ 7.35
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£ 6.99
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£ 6.40
Schneider Electric
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ZB5AD922, Schneider Electric
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£ 71.62
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New Items
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N151-BLK, Sifam

N151-BLK, Sifam

Matt Finish Collet Knobs (Style 1) From Sifam, this selection of matt finish collet knobs are functional and simplistic. Compatible with various push-fit accessories, such as dial skirts and nut covers, this range of collet knobs are as versatile as they are practical. Sifam collet knobs are also available with a potruding indicator. Features and Benefits: • Four diameters of collet knobs with a variety of collet sizes for different pot shafts etc • The 21mm and 29mm versions incorporate an 8mm AF tightening nut and a recess in the base which will accommodate the control mounting nut • The 11mm and 15mm versions incorporate round nuts with slots • Fixing tools are available separately for tightening the collets, they do not have sufficient size to cover the control mounting nut and separate nut covers are available
New items
SP151 125 BLACK, Sifam

SP151 125 BLACK, Sifam

Matt Finish Collet Knobs (Style 1) From Sifam, this selection of matt finish collet knobs are functional and simplistic. Compatible with various push-fit accessories, such as dial skirts and nut covers, this range of collet knobs are as versatile as they are practical. Sifam collet knobs are also available with a potruding indicator. Features and Benefits: • Four diameters of collet knobs with a variety of collet sizes for different pot shafts etc • The 21mm and 29mm versions incorporate an 8mm AF tightening nut and a recess in the base which will accommodate the control mounting nut • The 11mm and 15mm versions incorporate round nuts with slots • Fixing tools are available separately for tightening the collets, they do not have sufficient size to cover the control mounting nut and separate nut covers are available 6.35 mm knobs for fitting on spindles Range of high-quality die-cast knobs with brass bushings. Suited for Ø 6.35 mm spindles. The knobs are grooved to accommodate control element mounting nuts, except for the standard 12.5 mm model, which incorporates a 6 AF stay bolt. All other knobs incorporate 4 AF stay bolts. Lathed aluminium caps are available on request and will accommodate all types of knobs.
New items
3/03/TPN130-006/237/230, Sifam

3/03/TPN130-006/237/230, Sifam

Push-On Soft Touch Control Knobs Available in 3 shaft sizes: 6mm 'splined', 4mm 'D' and 6mm 'D' Black polypropylene moulding with coloured indicator line Smooth velvet feel For suitable potentiometers see Resistors section
New items
PKES60B1/8, TE Connectivity
New items
SP151 250 BLACK, Sifam

SP151 250 BLACK, Sifam

Matt Finish Collet Knobs (Style 1) From Sifam, this selection of matt finish collet knobs are functional and simplistic. Compatible with various push-fit accessories, such as dial skirts and nut covers, this range of collet knobs are as versatile as they are practical. Sifam collet knobs are also available with a potruding indicator. Features and Benefits: • Four diameters of collet knobs with a variety of collet sizes for different pot shafts etc • The 21mm and 29mm versions incorporate an 8mm AF tightening nut and a recess in the base which will accommodate the control mounting nut • The 11mm and 15mm versions incorporate round nuts with slots • Fixing tools are available separately for tightening the collets, they do not have sufficient size to cover the control mounting nut and separate nut covers are available 6.35 mm knobs for fitting on spindles Range of high-quality die-cast knobs with brass bushings. Suited for Ø 6.35 mm spindles. The knobs are grooved to accommodate control element mounting nuts, except for the standard 12.5 mm model, which incorporates a 6 AF stay bolt. All other knobs incorporate 4 AF stay bolts. Lathed aluminium caps are available on request and will accommodate all types of knobs.
New items
PKG100B1/4, TE Connectivity
New items
05 LK121 04, Sifam

05 LK121 04, Sifam

Two Slot Nylon Slider Knobs Available in 3 shaft fitting types: Straight, T-bar, tapered Black nylon moulding with indicator line Ergonomic design for ease of control Dimensions (mm) Size Style A B C D E Shaft fitting 1 1 11 26 10 4 - 1 (Straight) 2 1 15 26 10 4 - 1 (Straight) 3 1 11 26 10 4 - 2 (T-bar) 4 1 15 26 10 4 - 2 (T-bar) 5 1 11 26 10 4 - 3 (Tapered) 6 1 15 26 10 4 - 3 (Tapered) 7 2 8 10 12 10 5 3 (Tapered) 8 2 12.5 10 12 10 5 3 (Tapered) Knob Style and Shaft Size RS Stock Number Size Knob Style Shaft Type 281-7197 1 4/02 LK110 01 01 Plain 281-7204 2 4/02 LK150 01 01 Plain 281-7210 3 4/02 LK110 08 08 T-Bar 281-7226 4 4/02 LK150 08 08 T-Bar 279-9027 5 4/02 LK110 04 04 Tapered 279-9049 6 4/02 LK150 04 04 Tapered 279-9055 7 05 LK081 04 04 Tapered 279-9061 8 05 LK121 04 04 Tapered
New items
H-516-6M, Bourns

H-516-6M, Bourns

H-516 Series 15 Turn Counting Dial From Bourns, the H-516 Series Counting Dial is for use with precision potentiometers or other rotating devices of up to 15 turns. The H-516 Series 0 – 15 turn counting dial has a compact design requiring only 22.8 mm diameter panel space, has no backlash and is for use with plastic shafts.
New items
P150BK, Sifam

P150BK, Sifam

Caps and Pointers Available for all sizes of collect knobs and are in several different types and colours
New items
040-1065, Elma

040-1065, Elma

The Elma classic collet have Knobs having diameter (Ø) of 10 mm. The cap colour is green. Precise quality knobs Secure collet mounting Wide variety Lots of accessories Customized colours on request
New items
3/05/DRNP120 006/26 /1004 /224, Sifam

3/05/DRNP120 006/26 /1004 /224, Sifam

The Sifam Instruments 12mm soft touch knob with pointer 6mm "D" shaft. Splines 18 Outer material TPE Inner material PP Two shot-Two colour
New items
DR110 006/26 BLACK/005, Sifam

DR110 006/26 BLACK/005, Sifam

The Sifam Instruments 11mm push-on knob 6mm "D" shaft push-on knob, with compression ring. Single shot Single colour
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