Adjustable Resistors

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.

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Omschrijving Prijs Resistance Tolerance Power Rating Temperature Coefficient Termination Style Package/Case Technology Mounting Style Case Style Series Dimensions Diameter Length Maximum Operating Temperature
RS-stocknr. 144-5497
FabrikantnummerC300K10RE
FabrikantArcol Ohmite
€ 30,01
Each
Aantal stuks
10Ω ±10% 300W ±400ppm/°C Solder Tubular Wire Wound - - 280 28.58 (Dia.) x 215.9mm - - +400°C
RS-stocknr. 144-5507
FabrikantnummerD50K50RE
FabrikantArcol Ohmite
€ 17,62
Each
Aantal stuks
50Ω ±10% 50W ±260ppm/°C Solder - Wire Wound Bolt On Vitreous Enamel 210 14.3 (Dia.) x 101.6mm 14.3mm 101.6mm +350°C
RS-stocknr. 144-5508
FabrikantnummerD50K5R0E
FabrikantArcol Ohmite
€ 19,90
Each
Aantal stuks
±10% 50W ±260ppm/°C Solder - Wire Wound Bolt On Vitreous Enamel 210 14.3 (Dia.) x 101.6mm 14.3mm 101.6mm +350°C
RS-stocknr. 144-5505
FabrikantnummerD25K20RE
FabrikantArcol Ohmite
€ 12,83
Each
Aantal stuks
20Ω ±10% 25W ±260ppm/°C Solder - Wire Wound Bolt On Vitreous Enamel 210 14.3 (Dia.) x 50.8mm 14.3mm 50.8mm +350°C
RS-stocknr. 144-5503
FabrikantnummerD100K25RE
FabrikantArcol Ohmite
€ 25,86
Each
Aantal stuks
25Ω ±10% 100W ±260ppm/°C Solder - Wire Wound Bolt On Vitreous Enamel 210 19.1 (Dia.) x 165.1mm 19.1mm 165.1mm +350°C
RS-stocknr. 144-5506
FabrikantnummerD25K300E
FabrikantArcol Ohmite
€ 11,06
Each
Aantal stuks
300Ω ±10% 25W ±260ppm/°C Solder - Wire Wound Bolt On Vitreous Enamel 210 14.3 (Dia.) x 50.8mm 14.3mm 50.8mm +350°C
RS-stocknr. 144-5504
FabrikantnummerD100K2R0E
FabrikantArcol Ohmite
€ 28,58
Each
Aantal stuks
±10% 100W ±260ppm/°C Solder - Wire Wound Bolt On Vitreous Enamel 210 19.1 (Dia.) x 165.1mm 19.1mm 165.1mm +350°C
RS-stocknr. 136-3281
FabrikantnummerD50K4R0E
FabrikantArcol Ohmite
€ 19,11
Each
Aantal stuks
±10% 50W ±260ppm/°C Radial - Wire Wound Bolt On Vitreous Enamel 210 14.3 (Dia.) x 101.6mm 14.3mm 101.6mm +350°C