Leeds & Northrup apparatus at the Louisiana Purchase Exposition 1904 (1904)
Leeds and Northrup Company · Leeds and Northrup Company · leaf 33
ual induction. Non-inductive resistances are also pro-vided and arranged so that when a spool of self-induction is cut out anon-inductive resistance of equal value and of wire having the same tem-perature co-efficient is put in circuit, and thus the resistance of the box isalways the same, while… … nating current wave-. Without these curves one can gain only aninadequate idea of the inner workings of a dynamo, motor or transformer.And considering the rapid multiplication of alternating current apparatus,both of single phase and multiphase varieties, it is evident that the fieldof usefulness…
Electricity · Electrical Equipment · Electric Circuits · Electronics
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