. Dental and oral radiography; a textbook for students and practitioners of dentistry . 05 DENTAL AND ORAL RADIOGRAPHY but alternating in character. The rectifying switch thenchanges this high voltage alternating current to a directcurrent, and as such it is carried to the terminals of thetube. The interrupterless transformer is, as stated before,the most iDowerful and efficient type of apparatus avail-able for x-ray work. It is likewise the most expensive,—too expensive in fact to be considered for the x-ray lab-. Fig. 22.—Interrupterless transformer adapted for use in the dental x-ray labora
. Dental and oral radiography; a textbook for students and practitioners of dentistry . 05 DENTAL AND ORAL RADIOGRAPHY but alternating in character. The rectifying switch thenchanges this high voltage alternating current to a directcurrent, and as such it is carried to the terminals of thetube. The interrupterless transformer is, as stated before,the most iDowerful and efficient type of apparatus avail-able for x-ray work. It is likewise the most expensive,—too expensive in fact to be considered for the x-ray lab-. Fig. 22.—Interrupterless transformer adapted for use in the dental x-ray laboratory. oratory of the average practitioner of dentistry, in viewof the fact that with the induction coil and other less ex-pensive apparatus such excellent results can be preceding remark, however, should not be con-strued as an argument against the interrupterless trans-former. To the prospective purchaser who desires thevery best, regardless of expense, or who expects to do agreat deal of radiography, the initial expense should not X-RAY MACHIj^ES 59 be the prime consideration, as oftentimes the most ex-pensive things in the long run prove a matter of conclusion, I would emphasize the fact that the char-
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