. The principles and practice of roentgenological technique . Fig. 58.—U. S. army portable unit. Both transfor-mers are in a case. The top of the case carriesmeters and switches. Step-Dozvn Transformer: The step-downtransformer for the filament current is of theusual type, oil-insulated. To prevent a dropin line voltage and the lowering of the fila-ment current, when operating, a small trans-. Fic. 59.—The outrit ready for use. The engine is to the left. The step-up and step-down transformersand accessories are in the lower part of the box at the end of the table. On the shelf at the topare vo
. The principles and practice of roentgenological technique . Fig. 58.—U. S. army portable unit. Both transfor-mers are in a case. The top of the case carriesmeters and switches. Step-Dozvn Transformer: The step-downtransformer for the filament current is of theusual type, oil-insulated. To prevent a dropin line voltage and the lowering of the fila-ment current, when operating, a small trans-. Fic. 59.—The outrit ready for use. The engine is to the left. The step-up and step-down transformersand accessories are in the lower part of the box at the end of the table. On the shelf at the topare voltmeter, rheostat, milliamperemeter and operating switch. The table is a portable tro-choscope, the tube being in the lead-lined box, which moves freely under the bakelite table top. 52 PORTABLE UNITS former, called a booster is placed in the cir-cuit, so that its primary is in the primary cir-cuit of the step-up transformer and its sec-ondary in the primary circuit of the Coolidgestep-down transformer. When the switch is
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectradiogr, bookyear1920
