The U.S. Patents of Nikola Tesla

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Referring Figure designates any source alternating equivalent current, from which lead off mains A'. . 95 With the parts thus arranged the secondary circuit completed through the coils the motor whenever the two brushes rest upon the uninsulated segments the disk and in­ terrupted through the motor other times. 568,179, dated September 22, 1896. METHOD AND APPARATUS FOR PRODUCING CURRENTS HIGH FREQUENCY. Applicationfiled July 6,1896. The figures are diagrammatic illustrations of the system slightly-modified forms, and 75 vdll described detail their order. 100 Such motor, properly constructed, well- understood ways, maintains very exact syn­ chronism with the alterations the source, and the arm may therefore adjusted to . ’Serial H o, 598,130, (H om odel,) , all whom concern: I known that Nikola Tesla, citizen- j the United States, residing New York, ! the county and State New York, have iri- i vented certain new and useful Improvements j Methods and Apparatus for Producing j Currents High Frequency, which the fol- I lowing specification, reference being had ; the drawings accompanying and forming •io part the same.nited States Patent Office. insulating-arm G, stationary with respect the motor-shaft and adjustable with reference the poles of the fixed magnets, carries two brushes H, which bear upon the periphery the disk. ■j The general arrangement circuits and j! apparatus which prefer for ordinary appli- ! j cations this invention have shown and de- ! scribed application filed meApril 22, 1896,Serial No. The most practicable means for accomplishing this 'which am aware employ synchronous motor con­ nected with the source supply and operat­ ing circuit-controller which interrupts the 65 charging-current about the instant of highest potential each wave and permits the condenser discharge the energy stored in through its appropriate circuit. The apparatus for producing electrical s currents very high frequency which is embodied the invention present application involves its chief element tS means for the periodic charging acondensef or circuit possessing capacity the energy j l given source and the discharge the | same through circuit low self-induction, j whereby the rapid succession impulses ; characteristic condenser discharge under Í such circumstances made available for j many practical and useful purposes. NIKOLA TESLA, NEW YORK, Y. therefore provide, 55 in case alternating equivalent electro­ motive force employed the source of supply, circuit-controller wdiich will inter­ rupt the charging-circuit instants prede­ termined with reference the variations 6c potential therein. have shown, however, the application referred the source sup­ ply continuous -current generator, in general source direct currents, and while the principle operation and the general 40 character the apparatus remain the same ■whether the current the source direct or alternating, yet the economical utilization ofthe latter involves certain special principles and9appliances which present object 45 illustrate the basis for the claims in­ vention made herein. When the potential the source periodic­ ally rises and falls, whether- with reversals or not immaterial, essential eco- 50 nominal operation that the intervals inter­ ruption the charging-current should bear a definite time relation the period the current, order that the effective potential of the impulses charging the condenser may be high possible. SPECIFICATION form ing art etters atent No. any point where desired produce the high- 80 frequency currents branch circuit Bis taken—— off from the mains, and order raise the potential the current transformer em­ ployed, represented the primary and secondary The circuit the secondary 85 includes the energizing-coils synchro­ nous motor and circuit-controller, which, in the present instance, Fig. This apparatus, which may considered typi- 70 cal the means employed for carrying out the invention, have illustrated the ac­ companying drawings. 588,534, comprising local circuit high self-induction connected with a source supply, condenser, discharge- 30 circuit low self-induction, and circuit- controller operating alternately effect the charging the condenser the energy stored the circuit high self-induction and its discharge through that low7self- 35 induction. shown as composed metal disk with insulated , segments its periphery and fixed the 90 shaft the motor