The standard manual of dynamos and practical application of dynamo-electric machinery (1915)
MacFadden, Carl K. [from old catalog], Ray, William D., [from old catalog] joint author · Chicago, Laird & Lee, inc. · leaf 31
one whose flow is always in one direc-tion, The current curve of such a dynamo will now be 26 THEORY O^ DYNAMOS. such as shown in figure 7, in which it will be noticed allof the waves of current are above the zero line A—B.This type of current is known as a direct current of pul-sating character.… … FIGURE 7.—PUI^ATING DIRECT CURRENT WAVE—SINGLE coil. ARJVIATURE. mo as shown, must be greatly improved. In chapter i,we have spoken of electro-magnets as being the onlypractical form for large and powerful magnets, and wewill find that all field magnets for large dynamos are ofthis type. The…
Electrical engineering · Electric machinery
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