Nikola Tesla - Free-Energy Devices

HIGH FKEQ UENCY AND HIGH POTENTIAL CURRENTS. 203with the discharge of a Holtz or Wimshurst machine that otherinteresting appliance so dear to the experimenter. What a differencethere is between these phenomena And ! yet, had I madethe necessary arrangements which could have been made easily,were it not that they would interfere with other experiments Icould have produced with this coil sparks which, had I the coilFIG. 131.hidden from your view and only two knobs exposed, even thekeenest observer among you would find it difficult, if not impossible,to distinguish from those of an influence or friction machine.This may be done in many ways for instance, by operatingthe induction coil which charges the condenser from analternating-current machine of very low frequency, and preferablyadjusting the discharge circuit so that there are no oscillationsset up in We it. then obtain in the secondary circuit,if theknobs are of the required size and properly set, a more or less