Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
February 13, 2018
Patent Application Number
14980861
Date Filed
December 28, 2015
Patent Citations Received
Patent Primary Examiner
Patent abstract
A railroad switch machine includes a pair of switch blades, an electric motor mechanically coupled to the pair of switch blades, a pair of input terminals connected to a DC power supply for receiving a power signal and a regulator to adapt the power signal between the input terminals into a motor current applied to the electric motor. The regulator includes a plurality of switches connected between the pair of input terminals and two phases of the electric motor. The switches are transistors and the regulator also includes a controller adapted to drive each transistor with a respective command signal to adjust a value and a direction of an intensity of the motor current.
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