THE ALTERNATING CURRENT CIRCUIT
m.sc.tech., m.i.e.e., a.i.mi-ch.e., mem. a.i.e.e.
head of the school of engineering at the polytechnic, regent street, london, w.i
author of "alternating current electrical engineering, "alternating current wave-forms," etc.
SIR. ISAAC PIT .MAN & SONS. LTD.