A ferroresonant servomotor characterized by the fact that saturation coils are series connected with diodes and the resulting circuits are in parallel connection and are connected to an alternating current supply voltage, the diodes, which are connected in series with the saturation coils through which passes flux produced by primary coils of the same ferroresonant circuit, being connected in an inverse conduction sense, while control coils proper, through which passes direct current, are mounted on each pole in such a way that their ampere-turns are added in the closed magnetic circuit of the pole to the ampere-turns of the saturation coils on the poles of one of the ferroresonant circuits and are subtracted from the ampere-turns of the saturation coils at the poles of the other ferroresonant circuit.
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