Propagation of Electric Currents in Telephone Telegraph Conductors
Propagation of Electric Currents in Telephone Telegraph Conductors
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In our eReader you can find the full English version of the book. Read Propagation of Electric Currents in Telephone Telegraph Conductors Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Propagation of Electric Currents in Telephone Telegraph Conductors
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To quickly assess the difficulty of the text, read a short excerpt:
= A Cos (2w-2w+l) |^Cos (k. T-4). The current at the with coil is also (V). =^. Cos (2^-2^+1) ~ Cos (k t t-4>)' If these coils are one wave length apart, then (i m ) 8 = (*, ni ) s, and mi ??i is the number of coils covered by one wave. But then we must have Hence mi n = = /> and this last expression is there- o fore the number of coils covered by one wave length of the sth harmonic.
In the second case it can be shown in a similar manner that A 4- V . S7r 1 2S + 1 7T 1 2?T Accordingly instead o...f and ~~ we can wn ^ e * If we consider 27r to represent the wave length and y the angle which is the same fraction of 2?? that the distance d between two consecutive coils is of a wave length, then 2-Tr : y = \ : d, and therefore ZTT/V S = y.
1 TT Sir - _.. 1 . STT Hence 3 7 == - = ^ and Sin g y = Sin ^.
Now on comparing equation (40) for the frequency of free oscillations in a uniform cable with equation (56), which gives the same quantity for the non-uniform loaded cable, it is clear that if the coils are so close that o 7 is practically the same as Sin -& y, then the loaded line has free vibrations like the equivalent equally loaded cable.
What to read after Propagation of Electric Currents in Telephone Telegraph Conductors?
You can find similar books in the "Read Also" column, or choose other free books by John Ambrose Fleming to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
= A Cos (2w-2w+l) |^Cos (k. T-4). The current at the with coil is also (V). =^. Cos (2^-2^+1) ~ Cos (k t t-4>)' If these coils are one wave length apart, then (i m ) 8 = (*, ni ) s, and mi ??i is the number of coils covered by one wave. But then we must have Hence mi n = = /> and this last expression is there- o fore the number of coils covered by one wave length of the sth harmonic.
In the second case it can be shown in a similar manner that A 4- V . S7r 1 2S + 1 7T 1 2?T Accordingly instead o...f and ~~ we can wn ^ e * If we consider 27r to represent the wave length and y the angle which is the same fraction of 2?? that the distance d between two consecutive coils is of a wave length, then 2-Tr : y = \ : d, and therefore ZTT/V S = y.
1 TT Sir - _.. 1 . STT Hence 3 7 == - = ^ and Sin g y = Sin ^.
Now on comparing equation (40) for the frequency of free oscillations in a uniform cable with equation (56), which gives the same quantity for the non-uniform loaded cable, it is clear that if the coils are so close that o 7 is practically the same as Sin -& y, then the loaded line has free vibrations like the equivalent equally loaded cable.
What to read after Propagation of Electric Currents in Telephone Telegraph Conductors?
You can find similar books in the "Read Also" column, or choose other free books by John Ambrose Fleming to read onlineMoreLess
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