Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 169
n a Hne with the plane ot theirrotation. The office of these studs is to shorten the air gap at pre-determined and equal intervals, thus discharging the condensers,which are immediately charged by the direct current. In both formsof the device the arc is prevented by the rapid rotation of the… … C D D/RECTCURRENT REVOLV/NG DISK
Electrical engineering
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