The standard electrical dictionary : a popular encyclopaedia of words and terms used in the practice of electrical engineering (1898)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · London : Crosby Lockwood and Son · leaf 155
Fig. no. Fekrantis Converter or Transformer. coils. The coil may be jacketed with iron to increase the per-meance. (See Alternating Current System.) … Fig. III. Swinburnes Hedgehog Transformeh Co=ordinates, System of. A system for indicating tlie posi-tion of points in space by reference to fixed lines, intersecting at adetermined and arbitrary point O, termed the origin of co-ordinates.In plane rectangular co-ordinates two lines are drawn…
Electricity
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