United States. Surgeon-General's Office, American Roentgen Ray Society · New York : Middleditch · leaf 64
onverter tochange 110-volt direct current to a proper alternatingvoltage. A switch is closed in one direction to operateon 110 volt A.C. and in the opposite direction for 110volt D C. Fig. 25. A single push-button switch operatesboth the filament and X-ray currents. For voltagesabove 110, the… … Fig. 26. Auto transformer construction and connections.57 58 X-RAY MANUAI^-U. S. ARMY there is no synchronous motor, the unit will operateover a wide range of frequencies of alternating current.The user is warned to use this outfit exactly as di-rected in the instruction sheet issued therewith.…
