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.

...
顯示內容 隱藏內容

篩選條件

正在檢視 41 - 60,共 162 項產品
Results per page
Description Price Resistance Tolerance Power Rating Temperature Coefficient Termination Style Package/Case Technology Mounting Style Case Style Series Dimensions Diameter Length Maximum Operating Temperature
RS庫存編號 893-0912
製造零件編號E300K3R1E
BrandOhmite
HK$364.42
單位
3 Ω ±10% 300W ±400ppm/°C - - - Bolt On, Bracket Vitreous Enamel E300 28.58 x 215.9mm 28.58mm 215.9mm +400°C
RS庫存編號 893-5513
製造零件編號D225K500E-B
BrandOhmite
HK$127.69
單位
500 Ω ±10% 225W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D225 28.6 x 266.7mm 28.6mm 266.7mm +350°C
RS庫存編號 892-4850
製造零件編號D25K100E
BrandOhmite
HK$143.30
單位
100 Ω ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS庫存編號 893-5519
製造零件編號D225K250E-B
BrandOhmite
HK$111.037
/個 (每包:50個)
單位
250 Ω ±10% 225W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D225 28.6 x 266.7mm 28.6mm 266.7mm +350°C
RS庫存編號 892-4856
製造零件編號D225K5R0E
BrandOhmite
HK$397.13
單位
5 Ω ±10% 225W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D225 28.6 x 266.7mm 28.6mm 266.7mm +350°C
RS庫存編號 788-7659
製造零件編號RSSD25168A2R20KB06
BrandVishay
HK$400.51
單位
2.2 Ω ±10% 200W - Radial BA25 - Bolt On Vitreous Enamel RSSD 27 (Dia.) x 168mm 27mm 168mm +450°C
RS庫存編號 892-4929
製造零件編號D50K250E
BrandOhmite
HK$157.14
單位
250 Ω ±10% 50W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D50 14.3 x 101.6mm 14.3mm 101.6mm +350°C
RS庫存編號 892-6685
製造零件編號D25K400E
BrandOhmite
HK$143.30
單位
400 Ω ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS庫存編號 892-4831
製造零件編號D225K25RE
BrandOhmite
HK$369.10
單位
25 Ω ±10% 225W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D225 28.6 x 266.7mm 28.6mm 266.7mm +350°C
RS庫存編號 893-0946
製造零件編號E300KR50E
BrandOhmite
HK$409.79
單位
500 mΩ ±10% 300W ±400ppm/°C - - - Bolt On, Bracket Vitreous Enamel E300 28.58 x 215.9mm 28.58mm 215.9mm +400°C
RS庫存編號 892-4727
製造零件編號D100K1K0E
BrandOhmite
HK$247.54
單位
1 kΩ ±10% 100W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D100 19.1 x 165.1mm 19.1mm 165.1mm +350°C
RS庫存編號 892-8278
製造零件編號D25K500E
BrandOhmite
HK$143.30
單位
500 Ω ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS庫存編號 892-8335
製造零件編號D100K2K5E
BrandOhmite
HK$231.90
單位
2.5 kΩ ±10% 100W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D100 19.1 x 165.1mm 19.1mm 165.1mm +350°C
RS庫存編號 788-7731
製造零件編號RSSD20117A1000JB15
BrandVishay
HK$383.11
單位
100 Ω 5% 100W - Radial BA25 Wire Wound Flange Mount Vitreous Enamel RSSD 22 (Dia.) x 117mm 22mm 117mm +450°C
RS庫存編號 788-7738
製造零件編號RSSD20117A1R00KB15
BrandVishay
HK$468.96
單位
1 Ω 10% 100W - Radial BA25 Wire Wound Flange Mount Vitreous Enamel RSSD 22 (Dia.) x 117mm 22mm 117mm +450°C
RS庫存編號 788-7784
製造零件編號RSSD30250A22R0JB06
BrandVishay
HK$686.26
單位
22 Ω 5% 280W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 32 (Dia.) x 250mm 32mm 250mm +450°C
RS庫存編號 892-8347
製造零件編號D50K750E
BrandOhmite
HK$157.14
單位
750 Ω ±10% 50W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D50 14.3 x 101.6mm 14.3mm 101.6mm +350°C
RS庫存編號 891-8568
製造零件編號D50K500E
BrandOhmite
HK$157.14
單位
500 Ω ±10% 50W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D50 14.3 x 101.6mm 14.3mm 101.6mm +350°C
RS庫存編號 788-7652
製造零件編號RSSD25168AR220MB06
BrandVishay
HK$484.59
單位
220 mΩ ±20% 200W ±75ppm/°C Radial BA25 - Bolt On Vitreous Enamel RSSD 27 (Dia.) x 168mm 27mm 168mm +450°C
RS庫存編號 893-0918
製造零件編號E300K2R0E
BrandOhmite
HK$364.42
單位
2 Ω ±10% 300W ±400ppm/°C - - - Bolt On, Bracket Vitreous Enamel E300 28.58 x 215.9mm 28.58mm 215.9mm +400°C