. Elementary and dental radiography / by Howard Riley Raper . Figure 356.—Special dental X-ray machine,electrotherapsutic—attachment on the Transformer type, with high-frequency—i. e.,Size: 21 inches wide, 20 inches deep, 71 inches suggest, however, that the man with such a current at his disposal mightexperiment with it using it with the idea that it is a cellular massage. Some coils are so constructed that the coil proper may be placed ona shelf on the wall, up out of the way, the controls of the coils or switch-board being mounted elsewhere and within easy reach. With an X-raymach
. Elementary and dental radiography / by Howard Riley Raper . Figure 356.—Special dental X-ray machine,electrotherapsutic—attachment on the Transformer type, with high-frequency—i. e.,Size: 21 inches wide, 20 inches deep, 71 inches suggest, however, that the man with such a current at his disposal mightexperiment with it using it with the idea that it is a cellular massage. Some coils are so constructed that the coil proper may be placed ona shelf on the wall, up out of the way, the controls of the coils or switch-board being mounted elsewhere and within easy reach. With an X-raymachine installed in this way overhead wiring is usually necessary. The principle of the overhead wiring system is illustrated in Fig. terminals of the coil are attached to the overhead wires. On the X-RAY MACHINES 3^3. Figure 357.—Special dental X-ray machine. Induction coil type. Size: 15 inches wide, 23 inches deep, 3C inches high. overhead wires are the trolley reels which fasten to the tube. The con-venience of overhead wiring is great. It will be observed that on Fig. 362 there are the usual terminals, viz.,the positive and negative secondary terminals and the dead or false 3-4 APPENDIX
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