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 215
II Fig. 118.—Using small cultivator to prepare soil Apparatus Required Mr. Pickslay was the owner of a Clapp-Eastham Hy- tone transmitter of J^ k.w. capacity, and this transmitter was used to produce the necessary current. ProjectiveCondenser g . •- =^ AerialNetwor/c Line … Fig. 119 The secondary of the oscillation transformer was com-posed of 100 turns of No. 18 annunciator wire wound in asingle layer upon a cardboard cylinder 5}^ in. in diameterwhich slips within the edgewise-wound copper strip form FURTHER NOTES ON PLANT CULTURE 211 ing the secondary of the…
Electric apparatus and appliances
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