Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery (1922)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1357
r this reason too low to maintainan alternating current arc. The arc, therefore, lasts onlyto the end of a half cycle, and then goes out. The maxi-mum voltage per gap at which the arc will extinguish atthe end of the half cycle depends to a great extent upon themetal of the cylinders. Thus some… … 0 Gaps Fig. 622lightning arrester When the voltage of an alternating current passes throughzero, of course no current flows. Before the current flowsin the reverse direction the voltage must again breakthrough the dielectric. The voltage required to do thisdepends upon how much the dielectric has…
