Nikola Tesla U.S. Patent 645,576 - System of Transmission of Electrical Energy Patent Wrapper Page 62

180 the joint effect of the capacities and inductances in the synchronized circuits, which effect is enhanced by a high frequency and it will be obviously understood, that if the latter. be reduced, a greater ratio of transformation should be resorted to, especially in cases in which it may be deemed of advantage to suppress, as much as possible, and particularly in the transmitting coil A, the rise of pressure due to the above effect, and to obtain the necessary electro-motive force solely by a large. transformation ratio. While electro-motive forces, such as are produced by 1 the apparatus just described, may be sufficient for many purposes. to which my system will, or may be applied, I wish to state, that I contemplate using, in an industrial undertaking of this kind, forces greatly in excess of these, and with my present knowledge and experience in this novel field, I would estimate them to range from twenty to fifty million volts, and possibly more. By the use of these much greater forces, larger amounts of energy may be conveyed through the atmosphere to remote places or regions and the distance of transmission may be thus extended practically without limit. As to the elevation of the terminals D, D', it is obvious that it will be determined by a number of things, as by the amount and quality of the work to be performed, by the local density and other conditions of the atmosphere, by the character of the surrounding country and such considerations as may present themselves in individual instances. Thus, if there be high mountains in the vicinity, the terminals should be at a greater -13This page retyped from microfilm for better readability - Ed.]