. Dental and oral radiography : a text book for students and practitioners of dentistry . ly the same result as where an uni-directionalcurrent is used. These coils have the advantage of being lesscumbersome, require less space and are less ex-pensive than the other form of apparatus, but theycannot be depended upon to do the character ofwork which the powerful induction coil or in-terrupterless transformer will do. Notwith-standing this fact, this type of apparatus undoubt-edly has a place in the x-ray laboratory of the den-tist, and if constructed along proper lines, can ren-der splendid ser
. Dental and oral radiography : a text book for students and practitioners of dentistry . ly the same result as where an uni-directionalcurrent is used. These coils have the advantage of being lesscumbersome, require less space and are less ex-pensive than the other form of apparatus, but theycannot be depended upon to do the character ofwork which the powerful induction coil or in-terrupterless transformer will do. Notwith-standing this fact, this type of apparatus undoubt-edly has a place in the x-ray laboratory of the den-tist, and if constructed along proper lines, can ren-der splendid service. Three sizes of these coiljsare shown in Figs. lx. 1! and 20. Interrupterless Transformer The interrupterless transformer is the newest and by all means the mosl >owerful x-ray machine X-RAY MACHINES 59 made. Aside from controlling and measuring ap-paratus, it consists of three principal parts, a ro-tary converter, if direct current is the source ofsupply, or a synchronous motor if the alternatingcurrent is the source of supply, a step-up trans-former, and a rectifying MOTOR
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectradiographydental
