ontact-breakers. When current is used direct from the mains, it is necessary thatthe interrupters should work with certainty, as the continued safetyof the coil depends upon their doing so. Mechanical Interrupters.—Many forms of interrupters havebeen devised, and for purposes of description they… … Fig. 20.—Dipper Break (Isenthal and Co.). conducting liquid such as alcohol, the spark is quenched moreeffectually than in the air. This form of mercury interrupter is stillin use, and in its modern forms the movement of the mechanism isusually effected by a small electromotor, the speed being…
X-rays · Radiography
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