International Library of Technology · Scranton, International Textbook Co. · leaf 502
y coil split up into anumber of sections. The lamps are each provided with areactance coil, as before, but the use of the transformeradmits of a considerable range in the number of lamps thatmay be operated on a circuit; that is, the combined voltagenecessary for the lamps may be considerably… … a_\-;_ *■—■*, .:-i A Sect/onO-Cf Fig. 21. constant-potential alternators is that in which a special trans-former is used to transform from constant potential toconstant current. This means that the transformer must § 19 ELECTRIC LIGHTING. 39 be so constructed that its secondary voltage will…
Electrical engineering
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