Induction coils : how to make, use, and repair them including Ruhmkorff, Tesla, and medical coils, Roentgen radiography, wireless telegraphy, and practical information on primary and secondary battery (1901)
Schneider, Norman H. (Norman Hugh) · New York : Spon & Chamberlain ; London : E. & F.N. Spon · leaf 42
f the en-larged diagram, Fig. 5. Sprague, in his Electricity : Its The-ory, Sources, and Application, recom-mends that the turns of wire in the sec-ondary coil shall gradually increase innumber until the middle of the spool is Coil Construction. 15 reached, and then decrease to the spoolend, in… … Fig. 6. be used depends on the requirements asto the spark. If a short thick spark bedesired, use a thick wire, say No. 34 B.& S. ; if a long thin one, use No. 36 toNo. 40 B. & S. Although it is impossible to lay down 16 Coil Construction. rules for determining the exact amount ofwire to be…
Induction coils · Radiography · X-rays
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