Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 383
ycle later b ispositive and a is negative, so that current can pass from b to c butno current can enter a. The current in the line L therefore flowsalways in one direction or is a direct current. There is a small reactance coil S, called a sustaining coil,placed in the line L to carry the rectifier…
Electrical engineering
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