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INVENTIONS OF NIKOLA TESLA.

In Fig. 88 the arrangement is substantially the same, exceptthat a switch t' is placed in the circuit which includes the two cir-cuits of the torque motor. Fig. 84 shows the two motors inseries, with a shunt around both containing a switch s t. Thereis also a shunt around the synchronizing motor s, with a switchp'. In JFig. 85 the same disposition is shown; but each motor isproyided with a shunt, in which are switches i >r and t", as shown.