Scientific American Supplement, No. 787, January 31, 1891
Scientific American Supplement, No. 787, January 31, 1891
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Now if the two coils instead of being put inseries are put in parallel, the coefficient of self-induction will bereduced to the same value as if there were only one coil, because halfthe line current (which is practically unaltered) will go through eachcoil. Hence the time constant of the circuit when the coils are inparallel will be a quarter of that which it is when the coils are inseries; on the other hand, for a given line current, the finalmagnetizing power of the two coils in parallel is ...only half what itwould be with the coil in series. The two lower curves in Fig. 54illustrate this, from which it is at once plain that the magnetizingpower for very brief currents is greater when the two coils are put inparallel with one another than when they are joined in series.
Now this circumstance has been known for some time to telegraphengineers. It has been patented several times over. It has formed thetheme of scientific papers, which have been read both in France and inEngland. The explanation generally given of the advantage of unitingthe coils in parallel is, I think, fallacious; namely that the "extracurrents" (i.
What to read after Scientific American Supplement, No. 787, January 31, 1891?
You can find similar books in the "Read Also" column, or choose other free books by Various to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Now if the two coils instead of being put inseries are put in parallel, the coefficient of self-induction will bereduced to the same value as if there were only one coil, because halfthe line current (which is practically unaltered) will go through eachcoil. Hence the time constant of the circuit when the coils are inparallel will be a quarter of that which it is when the coils are inseries; on the other hand, for a given line current, the finalmagnetizing power of the two coils in parallel is ...only half what itwould be with the coil in series. The two lower curves in Fig. 54illustrate this, from which it is at once plain that the magnetizingpower for very brief currents is greater when the two coils are put inparallel with one another than when they are joined in series.
Now this circumstance has been known for some time to telegraphengineers. It has been patented several times over. It has formed thetheme of scientific papers, which have been read both in France and inEngland. The explanation generally given of the advantage of unitingthe coils in parallel is, I think, fallacious; namely that the "extracurrents" (i.
What to read after Scientific American Supplement, No. 787, January 31, 1891?
You can find similar books in the "Read Also" column, or choose other free books by Various to read onlineMoreLess
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