Henry and Hora's modern electricity; a practical working encyclopedia (1915)
Henry, James. [from old catalog], Hora, Karel Jan, 1881- [from old catalog] joint author · Chicago, Laird & Lee, inc. · leaf 143
Fig. 47. … 142 MODERN ELECTRICITY a resistance, from brush to brush, of 0*048 ohms. There are,in the commutator, 76 bars of hard drawn copper insulated from each other by micastrips 0-75 mm. in thickness.Corresponding to these, thereare 76 sections, of two convo-lutions each, in the armature,the adjacent ends…
Electrical engineering
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