102

INVENTIONS OF NIKOLA TESLA.

however, possesses certain novel features of practical value and in-volves a knowledge of facts less generally understood. It comprisesthe use of a condenser or condensers in connection with the inducedor armature circuit of a motor and certain details of the con-

Fig. 86.

-o Ny - 1 o

Fig. 88.

Fig. 89.

mmmm

Fig. 87.

Fig. 90.

struction of such motors. In an alternating current motor of thetype particularly referred to above, or in any other which hasan armature coil or circuit closed upon itself, the latter repre-sents not only an inductive resistance, hut one which is period-