Leeds & Northrup apparatus at the Louisiana Purchase Exposition 1904 (1904)
Leeds and Northrup Company · Leeds and Northrup Company · leaf 39
fixed resist-ance AB, as in other cases, the resistance whose terminals are AB isvaried, being in each case proportional to the current at the instant ofcontact. This is effected by having B fixed at the middle of MIN1 andmoving A to such a point on the spiral that the distance AB is propor-tional… … portional to the distance AB, and also to the current passing throughthe spiral MX1. Since the former is proportional to I (the current), andthe latter is proportional to E (the electromotive force), the differentpotential AB, and, therefore, of PQ, is proportional to the product IE.which is the…
Electricity · Electrical Equipment · Electric Circuits · Electronics
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