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Showing Results For: Potentiometers

Potentiometers

A potentiometer is a device that is used to control the current flow. It consists of three terminals through which it achieves that objective. They consist of a sliding or rotating contact that creates an adjustable voltage divider. If only two of the three terminals are used, it acts as a rheostat. Potentiometers are majorly known as voltage dividers as they are designed to measure the voltage. Potentiometers are primarily used to control devices like audio equipment or volume control. When op...

A potentiometer is a device that is used to control the current flow. It consists of three terminals through which it achieves that objective. They consist of a sliding or rotating contact that creates an adjustable voltage divider. If only two of the three terminals are used, it acts as a rheostat. Potentiometers are majorly known as voltage dividers as they are designed to measure the voltage.

Potentiometers are primarily used to control devices like audio equipment or volume control. When operated by such a mechanism, they can also be used as transducers in a joystick device. They are rarely used to control significant amounts of power since the power that a potentiometer dissipates can be compared to the power in the control load.

How Does a Potentiometer Work?

  • A potentiometer is also known as a pot. It consists of a resistive element known as a track and a sliding contact known as the wiper present internally in the area in which the end terminals are connected to the resistive element.
  • The wiper is movable, and the resistance is then adjusted to it as it touches a resistive strip of material when it is moved closer to terminal 1 and moved far from terminal 2; the resistance at terminal 1 decreases, and the resistance at terminal 2 increases and vice versa.
  • Then input voltage is provided across the resistor where the output voltage will indicate a drop between the sliding and the fixed contact.
  • They measure the voltage with accuracy and reliability to accomplish a variable voltage from a fixed voltage source.
  • Potentiometers are known as passive devices, which indicates that they do not need any additional power supply or circuits to operate.
  • Some common examples of potentiometers include:
  • Controlling the audio equipment with the help of using volume controls
  • Measuring the position on a joystick for gaming.

Types of Potentiometers

There are many types of potentiometers in the market. Some are adjustable, while some are electronically controlled. We will mention the main kinds of potentiometers known in the market.

Rotatory Potentiometers

Rotatory potentiometers are the most common ones known and used in the market, where the adjustable wiper moves in a circular motion with the help of a knob. It consists of two pins connected to a resistive element put in a semi-circular element, while the other is connected to a rotatory knob. They have tolerances of 10% and 20% and can create linear or logarithmic outputs. There are various types of rotatory potentiometers which are:

  • Single-turn
  • Pot
  • Multi-turn
  • Dual-gang Pot
  • Concentric pot
  • Servo pot

Linear Potentiometers

Linear potentiometers are also known as sliders or faders. They are similar to the rotatory potentiometer, but the wiper moves in a linear motion in a linear potentiometer rather than a circular one. It consists of a pin connected to an adjustable slider; two other pins are connected to both of the ends of the output circuit, where the slider can slide on the resistor with the help of a connected track to the resistor. The linear potentiometer family has various types that are:

  • Slide Pot
  • Multi-Turn Slide
  • Dual-Slide Pot
  • Motorized Fader

Digital Potentiometer

A digital potentiometer is more like an electronically controlled component similar to potentiometers in terms of analog functions. It consists of 3 terminals in which 2 pins are connected to the end terminals, and the last of these pins are found attached to the wiper terminal so that the output voltage can vary. These potentiometers are popular due to their small size, no moving part, reliability, tolerance up to ±1%, and resistance to environmental conditions.


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RS PRO Wirewound Potentiometers - Long shaft Features and Benefits What is a potentiometer? How do potentiometers work?
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RS PRO 25 mm Wirewound Potentiometers - Single turn Features and Benefits What is a potentiometer? How do potentiometers work?
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RS PRO 25 mm Wirewound Potentiometers - Single turn Features and Benefits What is a potentiometer? How do potentiometers work?
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RS NP23 Series Conductive Plastic Potentiometers (With Stop) This series of RS potentiometers with stop provide resistance options of 1kΩ to 100kΩ and are constructed from a long life conductive plastic resistance element and a sturdy low profile plastic body. These potentiometers offer noise free output due to a precious metal wiper. 1W power rating at 70°C Rotational life of 4,000,000 shaft revolutions 320° electrical angle 330° mechanical angle ±20% resistance tolerance
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RS PRO Conductive Linear Potentiometers - Rod End Features and Benefits What is a potentiometer? How do potentiometers work? How do these rod end potentiometers work?
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RS 40mm Wirewound Potentiometers This series of RS potentiometers offer a range of resistance options between 100Ω and 10kΩ. They are single turn wirewound potentiometers with a 6mm diameter shaft and a rotational life of 100,000 revolutions. ±10% standard resistance tolerance 285° rotation (mechanical angle) 3W power rating
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Rohs Verified
RS 40mm Wirewound Potentiometers This series of RS potentiometers offer a range of resistance options between 100Ω and 10kΩ. They are single turn wirewound potentiometers with a 6mm diameter shaft and a rotational life of 100,000 revolutions. ±10% standard resistance tolerance 285° rotation (mechanical angle) 3W power rating
Check Stock & Lead Times Packaging Options
Rohs Verified
RS 40mm Wirewound Potentiometers This series of RS potentiometers offer a range of resistance options between 100Ω and 10kΩ. They are single turn wirewound potentiometers with a 6mm diameter shaft and a rotational life of 100,000 revolutions. ±10% standard resistance tolerance 285° rotation (mechanical angle) 3W power rating
Check Stock & Lead Times Packaging Options
Rohs Verified
RS NP22 Series Conductive Plastic This series of RS potentiometers offer resistance options of 1kΩ to 100kΩ and are constructed from a long life conductive plastic resistance element with an anodised aluminium machined body. These potentiometers feature noise free output due to a precious metal wiper. 1W power rating at 70°C Rotational life of 4,000,000 shaft revolutions ±20% resistance tolerance, but 10% is the best possible Continuous rotation 34° ±5% electrical angle
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Rohs Verified
RS PRO 25 mm Wirewound Potentiometers - Single turn Features and Benefits What is a potentiometer? How do potentiometers work?
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Rohs Verified
RS PRO Conductive Linear Potentiometers - Rod End Features and Benefits What is a potentiometer? How do potentiometers work? How do these rod end potentiometers work?
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Rohs Verified
RS Flexilin Conductive Plastic Linear Motion Potentiometers This series of RS linear motion potentiometers offer a range of resistance values and are constructed of conductive plastic. With an electrical life of 5,000,000 strokes these linear motion potentiometers have an essentially infinite resolution. Conductive plastic 842-7210 has a 50mm stroke length 842-7223 has a 200mm stroke length ±50% resistance tolerance
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FAQs

We offer free shipping for orders over £200 if delivery is in the UK. All other orders in the UK, shipping from £7.99 depending on the weight and measurement. Mainland Europe shipping charges start from £25. For all other countries shipping charges start from £50 for products like Potentiometers and all others.

You can email us directly at sales@enrgtech.co.uk or via our website for any queries regarding Potentiometers or any other product.

This depends on the Potentiometers individual product and information that can be found on our website.

Yes, we offer special discounts on orders above £200 for Potentiometers and all other products.

UK orders normally take between 2/3 working days. International orders normally take between 3/5 working days for all products including Potentiometers.

Yes. We keep updating our stock frequently and if a product like Potentiometers is not in stock then we will let you know.