Ferroresonant amplifying servomotors

Claim 1

A ferroresonant servomotor assembly comprising rotor and stator means, one of said rotor and stator means including a plurality of poles, arranged in pairs of poles of opposite polarity, primary coils, saturation and control windings connected at respective poles of said pairs of poles to form at least two ferroresonant circuits which generate flux, each of said two ferroresonant circuits including two of said primary coils from one pair of poles of opposite polarity, rectifier means connected in series with respective saturation windings, each of said rectifier means at one pole of a pair of poles being connected in opposing polarity with respect to the rectifier means connected to the saturation winding connected at the Other pole of said pair of poles of opposite polarity means for applying an AC voltage to said ferroresonant circuits and to said primary windings, and means applying a DC control current to said control winding, the control and saturation windings in one of said pair of poles having ampere-turns arranged in additive relation in the closed magnetic circuit of each of said poles situated in the interior of said primary windings, and in an other of said pair of poles in bucking relation, so that at a control current of an arbitrary sense, the current through said saturation windings is increased at the poles of one of the said ferroresonant circuits and reduced at the poles of the other ferroresonant circuit.