Instructions for installing and operating bipolar generators for incandescent lighting. (1894)
General Electric Company · General Electric Co. · leaf 27
he terminals of thefield magnets must be connected to the inside posts. The left orunder brush will then be positive, and the right or upper negative. If the armature revolves from left to right, the magnet terminalsmust be connected to the outside posts. The right or under brushwill then be… … In both cases, when the magnets are charged, so that the right-hand pole is the south pole, and the left-hand the north pole, theunder brush is positive. The polarity of the coils should never be reversed. If by any chance the polarity of the field magnets becomesreversed, the field connections…
Lighting · Electrical engineering · Lights
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