Nikola Tesla Books
HIGH FREQUENCY PLANT CULTURE 0 volts-60 cycles AC Ñ to ° १ Spark gap Condenser Transformer To overhead wires Oscillation Transformer Ground 173 Fig. 22. Diagram of connections for the apparatus gap is connected by cable to the ground connection of the oscillation transformer and this in turn to a series of wires buried in the ground beneath the plot to be cultivated. The high-potential, high-frequency terminal of the oscillation transformer connects with a piece of light copper rod, which extends upward and out of the side of the building, through a hole cut in the center of a pane of glass. This glass window should be at least 18 inches square and shaded on the outside of the building with a contrivance resembling an awning, in order that the surface of the glass may be kept as nearly dry as possible in wet weather. The copper rod passing through the glass is tipped with a connector to which the overhead wires of the plot are secured. Wiring the Plot.-The high frequency current produced by the apparatus described is administered to the plot of ground under cultivation through the agency of an overhead network of copper wires and a ground connection consisting of strands of wire buried in the earth of the plot. The transformer house is preferably located at one end of the plot in order that the high-frequency current may be carried to the area under cultivation by the shortest pos
