Electrical installations of electric light, power, traction and industrial electrical machinery (1902)
Kennedy, Rankin, d. 1917 · Edinburgh T.C. & E.C. Jack · leaf 118
Fic. 118 Field-Magnet Excitation possible tlux density, and the armature should be large and, as amagnet, very powerful, so that when the normal current is exceededthe field is actuallyweakened by thedux from the arma-ture poles. If thefield is not over-excited and thearmature fiux weak,any… … Series Wound Dynamo The old B Gramme, the Pilsen Schuckert, the Brush, and ElihuThomson arc lighting machines, now obsolete almost, were builtwith powerful arma-tures which automati-cally regulated thecurrent by theirreactions. The shunt dynamo(Fig. 120) has a finewire field bobbinof suf-ficient…
Electrical engineering · Electric power
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