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 67
e oscillation circuit is, of course, through bothprimaries. Still a further modification of this circuit ismade by placing the two resonators base to base as shownin Fig. 20. This makes virtually a Tesla coil of the pair,the only distinction being in the grounded neutral point. Advantages of… … Fig. 18.—Wiring diagram for Tesla coil showing transformer, spark gap and condenser problem is to support the primary and secondary and stillprevent leakage of the current. The combined type, Fig.20, or the style shown in Fig. 19, will overcome this diffi-culty with but a slight loss in results…
Electric apparatus and appliances
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