Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 156
directcurrent there is no very economical way to change a small currentat high voltage into a larger current at a lower and safer voltage.With alternating current, however, this can be done very readilyby means of a transformer, a device which consists in its simplestform of two entirely separate… … Fig. 13. Interior View of Incandescent-Lighting Transformer 136 UNDERWRITERS REQUIREMENTS 15 ampere is supplied to one coil of 100 turns. Then a current of 220volts and 10 amperes will be induced in the other coil which has but10 turns, that is, the voltage will be stepped down in the sameratio as…
Electrical engineering
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