International Library of Technology · Scranton, International Textbook Co. · leaf 713
1 W I Fig. 33. diameter and 8 inches long. This core is built up out of 46 INTERIOR WIRING. § 28 soft-iron wire and is wound with 5 or 6 layers of No. 18 mag-net wire. The coil k is connected in series with the cells r,as indicated in Fig. 33. The battery should have at least sixcells for…
Electrical engineering
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