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- Primary_line_constants abstract "The primary line constants are parameters that describe the characteristics of conductive trasmission lines, such as pairs of copper wires, in terms the physical electrical properties of the line. The primary line constants are only relevant to such lines and are to be contrasted with the secondary line constants, which can be derived from them, and are more generally applicable. The secondary line constants can be used, for instance, to compare the characteristics of a waveguide to a copper line, whereas the primary constants have no meaning for a waveguide.The constants are conductor resistance and inductance, and insulator capacitance and conductance, which are by convention given the symbols R, L, C, and G respectively. The constants are enumerated in terms of per unit length. The circuit representation of these elements requires a distributed element model and consequently calculus must be used to analyse the circuit. The secondary constants of characteristic impedance and propagation constant can be derived in this way.A number of special cases have particularly simple solutions and important practical applications. Low loss cable requires only L and C to be included in the analysis, useful for short lengths of cable. Low frequency applications, such as twisted pair telephone lines, are dominated by R and C only. High frequency applications, such as RF co-axial cable, are dominated by L and C. Lines loaded to prevent distortion need all four elements in the analysis, but have a simple, elegant solution.".
- Primary_line_constants thumbnail Telephone_cable.jpg?width=300.
- Primary_line_constants wikiPageID "24003596".
- Primary_line_constants wikiPageRevisionID "600464097".
- Primary_line_constants hasPhotoCollection Primary_line_constants.
- Primary_line_constants subject Category:Cables.
- Primary_line_constants subject Category:Distributed_element_circuits.
- Primary_line_constants subject Category:Electronic_design.
- Primary_line_constants subject Category:Telecommunications_engineering.
- Primary_line_constants type Artifact100021939.
- Primary_line_constants type Circuit103033362.
- Primary_line_constants type Device103183080.
- Primary_line_constants type DistributedElementCircuits.
- Primary_line_constants type ElectricalDevice103269401.
- Primary_line_constants type Instrumentality103575240.
- Primary_line_constants type Object100002684.
- Primary_line_constants type PhysicalEntity100001930.
- Primary_line_constants type Whole100003553.
- Primary_line_constants comment "The primary line constants are parameters that describe the characteristics of conductive trasmission lines, such as pairs of copper wires, in terms the physical electrical properties of the line. The primary line constants are only relevant to such lines and are to be contrasted with the secondary line constants, which can be derived from them, and are more generally applicable.".
- Primary_line_constants label "Primary line constants".
- Primary_line_constants sameAs m.07kgn8b.
- Primary_line_constants sameAs Q7243148.
- Primary_line_constants sameAs Q7243148.
- Primary_line_constants sameAs Primary_line_constants.
- Primary_line_constants wasDerivedFrom Primary_line_constants?oldid=600464097.
- Primary_line_constants depiction Telephone_cable.jpg.
- Primary_line_constants isPrimaryTopicOf Primary_line_constants.
