Resistance wire: Difference between revisions
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Application for resistance wire includes [[resistor]]s, [[heating element]]s, [[electric heater]]s, electric [[oven]]s, [[toaster]]s, and many more. |
Application for resistance wire includes [[resistor]]s, [[heating element]]s, [[electric heater]]s, electric [[oven]]s, [[toaster]]s, and many more. |
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==Types== |
==Types== |
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[[Nichrome]], a non-[[magnetism|magnetic]] [[alloy]] of [[nickel]] and chromium, is commonly used to make resistance wire because it has a high [[resistivity]] and resistance to [[oxidation]] at high temperatures. When used as a heating element, resistance wire is usually wound into coils. One difficulty in using nichrome wire is that common electrical solder will not stick to it, so the connections to the electrical power must be made using other methods such as crimp connectors or screw terminals. |
[[Nichrome]], a non-[[magnetism|magnetic]] [[alloy]] of [[nickel]] and chromium, is commonly used to make resistance wire because it has a high [[resistivity]] and resistance to [[oxidation]] at high temperatures. When used as a heating element, resistance wire is usually wound into coils. One difficulty in using nichrome wire is that common electrical solder will not stick to it, so the connections to the electrical power must be made using other methods such as crimp connectors or screw terminals. |
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[[Constantan]] is another material which is often used. It has low [[Electrical_resistivity_and_conductivity#Temperature_dependence|temperature dependence]] and is easily soldered. |
[[Constantan]] is another material which is often used. It has low [[Electrical_resistivity_and_conductivity#Temperature_dependence|temperature dependence]] and is easily soldered. |
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Many elements and alloys have been used as resistance wire for special purposes. The table below lists the resistivity of some common materials. |
Many elements and alloys have been used as resistance wire for special purposes. The table below lists the resistivity of some common materials. |
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| 5.90 e-6 |
| 5.90 e-6 |
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{{DEFAULTSORT:Resistance Wire}} |
{{DEFAULTSORT:Resistance Wire}} |
Revision as of 11:23, 10 January 2013
Resistance wire is a type of high resistance electrical wire.
Application for resistance wire includes resistors, heating elements, electric heaters, electric ovens, toasters, and many more.
Types
Nichrome, a non-magnetic alloy of nickel and chromium, is commonly used to make resistance wire because it has a high resistivity and resistance to oxidation at high temperatures. When used as a heating element, resistance wire is usually wound into coils. One difficulty in using nichrome wire is that common electrical solder will not stick to it, so the connections to the electrical power must be made using other methods such as crimp connectors or screw terminals.
Constantan is another material which is often used. It has low temperature dependence and is easily soldered.