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makes it expensive compared to the previously existing method of adding discrete loading coils at intervals along the cable. Against this, Krarup cable is lighter and easier to lay. The weight of early submarine cables using loading coils could cause excessive stress in the cable if not handled carefully. Additionally, Krarup cable has none of the problems of sealing the joins against seawater which was a major problem with loading coils before modern polymers began to be used.
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for no signal distortion. Krarup cable consists of iron wires wound tightly around the copper conducting cores and it is the iron that is the source of the additional inductance. However, it still does not have sufficient inductance to fully meet the
Heaviside condition. Its construction also
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Krarup was originally a civil engineer. He was in charge of public works in
Copenhagen until 1898 when he joined the Danish Telegraph Administration. In 1901 he conducted research on loaded lines at the
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For these reasons, Krarup cable was popular on shorter distances, where the distortion was not so high that loading coils had to be used, until the advent of
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cable superseded it. The first cable to be laid with Krarup cable, indeed the first cable to be laid with any kind of continuous loading, was between
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107:(12 October 1872 – 29/30 December 1909) was a Danish telegraph engineer who is chiefly known for the invention of a kind of
111:, eponymously called Krarup cable, which made improvements in the transmission of telephone signals, especially on
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in
Germany. Returning to Denmark he continued the theoretical work at the
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to reduce their distortion. All practical methods of loading add series
171:(Sweden) in 1902. This cable was engineered by Krarup himself.
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214:The worldwide history of telecommunications
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151:to the cable to try to meet the
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94:Danish Telegraph Administration
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235:20th-century Danish engineers
230:20th-century Danish inventors
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71:Continuously loaded cable
16:Danish telegraph engineer
130:University of Copenhagen
126:University of WĂĽrzburg
153:Heaviside condition
42:Copenhagen, Denmark
199:Huurdeman, p. 314.
190:Huurdeman, p. 321.
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105:Carl Emil Krarup
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53:(1909-12-29)
245:1909 deaths
240:1872 births
169:Helsingborg
86:Engineering
60:Nationality
224:Categories
207:References
149:inductance
35:1872-10-12
165:Helsingør
161:permalloy
119:Career
83:Fields
63:Danish
175:Notes
48:Died
29:Born
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