. Elementary and dental radiography / by Howard Riley Raper . ( closed co*i Fig. 38. Didactic drawing of the transformer or interrupterless X-ray machine. A the B the machine. To trace the current, follow the arrows by number. lead to the machine; two for the motor, two for the the motor is set in motion. Then the current may be turned intothe primary of the transformer and an alternating current is immediatelygenerated in the secondary winding. This secondary, alternating currentis of the proper voltage and amperage for X-ray work, and is made uni-
. Elementary and dental radiography / by Howard Riley Raper . ( closed co*i Fig. 38. Didactic drawing of the transformer or interrupterless X-ray machine. A the B the machine. To trace the current, follow the arrows by number. lead to the machine; two for the motor, two for the the motor is set in motion. Then the current may be turned intothe primary of the transformer and an alternating current is immediatelygenerated in the secondary winding. This secondary, alternating currentis of the proper voltage and amperage for X-ray work, and is made uni- 40 ELEMENTARY RADIOGRAPHY directional by passing it through the rectifier switch. In order for therectifier switch to change the alternating current into a direct one it mustrevolve at a definite rate of speed, in perfect synchronism, or step, withthe rapidity of alterations of the alternating current. Because of this,the motor is spoken of as a synchronous motor. The first interrupterless coils to be made for the alternating currenthad an motor connected w
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