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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, 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.
Panel mount fixed resistors are used to limit the flow of electricity in an electrical circuit (resistance). They are a type of fixed resistor which means the resistance is set at a specific value and can't be changed. Resistors are important because they help to prevent damage or destruction of other circuit components....
Features and benefits of panel mount fixed resistors
Panel mount fixed resistors feature a wire wound design (metallic wire is wound around a core of non-conductive material to reduce or restrict the flow of electric current) with a metal (usually aluminium) housing that provides heat conduction. They may also have flameproof construction or a corrugated ribbon element to allow for rapid cooling.
Applications of panel mount fixed resistors
Panel mount fixed resistors are commonly used for large electrical and production machinery, motor start/stop cycles, equipment discharge, load test simulation and dynamic braking.
Panel mount fixed resistors are also particularly suited for applications where the resistor is used to promote heat loss and cooling, because of its low temperature coefficient of resistance (TCR) – in other words, its resistance remains nearly constant over a wide range of temperatures.
Resistor mounting brackets are used as supports to secure fixed resistors in place on electronic devices and circuit boards. They are adjustable in design, which means they can be positioned to avoid electrical contact that may cause interference with the current flows. They are constructed from corrosion resistant metals like steel or aluminium.
Resistor mounting brackets fit inside the cores of the resistors and remain in place via spring tension mechanisms. Wire wound mounting brackets are used with fixed insulated resistors so that they can be placed onto uninsulated panels....
What are resistor mounting brackets used for?
The primary function of resistor mounting brackets is to secure resistors in place and prevent them from moving, which could cause circuit interruptions. Resistor mounting brackets also assist in dissipating heat away from the resistor, which in turn increases the resistor's lifespan.
Types of resistor mounting brackets
Resistor mounting brackets are classified as slide in clips or through bolt brackets.
Through bolt brackets have either elongated or slotted feet. The slotted option allows the bracket to be detached without having to remove the mounting screws, which means several resistors can be mounted onto one bracket.
A resistor network is a combination of several resistors that are configured into a pattern. Theyre used in electronic circuits to resist the flow of current and maintain safe currents in electrical devices. You can connect them to other components using solder.How do resistor networks work?Resistor networks are designed to drop the voltage of current as it flows from one terminal to another....
In turn, this protects the electronic circuit against shock, heat and moisture. You can use them for analog-to-digital and digital-to-analogue conversion, as voltage dividers or in computers. Types of resistor networksThere are several different kinds of resistor networks. These include:
Single row pins – isolated, individual resistors, each having two pins.
Single row pins – one common pin with all resistors bussed to remaining pins.
Dual row pins – isolated, individual resistors each with two adjacent pins.
Dual row pins – one common pin with all resistors bussed to remaining pins.
Dual row pins – isolated, individual resistors each with two adjacent pins.
Array resistors (also called resistor arrays) are a type of fixed resistors – devices which are used in electrical circuits to limit the flow of electricity and where the resistance is set at a specific value that can't be changed. Resistors help to prevent other circuit components from being damaged or destroyed....
How do array resistors work?
Array resistors are made from a combination of several resistors that are configured into a pattern. Although most array resistors use resistors connected in series, some array resistors use resistors in parallel or series-parallel designs. The resistors in a network act as voltage dividers which divide the voltage that is applied to a circuit into smaller amounts.
Where are array resistors used?
Array resistors are convenient when you need several resistors that all have one end connected to the same point in your circuit. They're widely used in electronic applications. The most common applications include:
Consumer electronics and computers
Analogue-to-digital and digital-to-analogue conversion
Resistor sample kits contain various combinations of resistors for use in electrical circuit designs. These kits are versatile to accommodate a variety of electronic application set-ups and board prototyping.
The resistors in in resistor sample kits can be made of different materials, including carbon film, metal film, metal foil or metal oxide. Special sample kits may contain either thick-film or thin-film products customised for specific uses....
What are resistor sample kits used for?
These kits are useful in numerous applications in designing, constructing or repairing electronic devices. Resistors are used a wide variety products like phone headsets, power supplies, barcode scanners, plasma televisions, control systems and stereo equipment.
Types of resistor sample kits
Resistors contained in these sample kits are often categorised by mounting type, such as axial, through hole, panel mount or surface mount
Another consideration when choosing a kit is to look at the resistor value ranges, usually indicated via colour coding charts on the packaging of the kits.
Resistors are referred to as a Passive Component. Surface Mount Resistors are more commonly known as SMD (surface mount device) or SMT (Surface mount technology) Resistors. These resistors offer advantages in space saving on Printed Circuit Boards (PCBs)....
Some common package sizes are 0201,0402,0603,0805,1206,1210,2020,2512
SMD - Some common package sizes are 0201,0402,0603,0805,1206,1210,2020,2512
Resistors are used in large volumes and are the preferred choice in electronics equipment due to their small size and high reliability. SMD resistors are particularly used in telecommunication, automotive (AEC Q200 qualified) and medical equipment, they also found in personal devices, displays and advanced technology