High frequency apparatus, design, construction and practical application; a practical treatise for electrical engineers, electricans, physicians, students and experimenters (1920)
Curtis, Thomas Stanley · New York, Norman W. Henley publishing company · leaf 225
s.I Wooden discs, 21 inches in diameter, are to be fitted I to the ends of the secondary cylinder in order to give it afinished appearance. Holes are bored through the centersI of the discs, of course, to permit access to the bushings1 within. I The secondary cylinder is surmounted by a discharger… … Fig. 120.—The oscillation transformer complete L CONSTRUCTION LARGE APPARATUS 221 high tension insulator and the rod carrying the ball runsthrough the center of this cone. The construction of the primary coil and base will beunderstood on reference to Fig. 121, which gives a plainview looking down…
Electric apparatus and appliances
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