Wiring diagrams of electrical apparatus and installations (1913)
McGraw-Hill · New York, McGraw-Hill Book Company · leaf 178
Fig. 264. RHEOSTATS AND CONTROLLERS 167 ■a■O … AAAA Fig. 265.—Connections for a compound automatic reversing printing-press controller.Moving the lever to the right gradually cuts out resistance in series with the armature untilfull spefed is reached, when further movement in the same direction will insert resistance iuseries with the field…
Electric wiring
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