Henry and Hora's modern electricity; a practical working encyclopedia (1915)
Henry, James. [from old catalog], Hora, Karel Jan, 1881- [from old catalog] joint author · Chicago, Laird & Lee, inc. · leaf 167
are two coils: the C::%, CSj:;:;:. ) primary (A) which receives the <^ alternate current, and the sec-*/ ondary (B) which gives out theFlG# ^ transformed current. The pri- mary consists of many turns of fine, well insulated copperwire to receive a small current at high pressure ; the second-ary… … ELECTRICAL ENGINEERING 165 and if the secondary coil is to furnish 200 amperes at 50volts, then the primary coil must supply at least 4 amperes(200^-50) at 2500 volts (50X50). On the other hand, in a transformer which is to transform5000 volts down to 100 volts, the ratio of the primary and…
Electrical engineering
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