Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 553
- number of lamps within certainlimits mav be operated on the same circuit. The Edison dynamo shown in Fig. 513 has a drum arma-ture much like that of the Weston machine. It differs how-ever from that armature in having an odd number of com-mutator bars and in having an armature core built up of… … Edisons S3-stem of Regulating. thin disks of soft iron insulated from the shaft and separatedfrom each other by paper. Fig. 514 illustrates the method of regulating the Edisondynamo. The machine is shunt-wound, and a variableresistance, R, is introduced into the field, magnet circuit.Whenever the…
Physics · Lantern projection · Electric apparatus and appliances
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