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Emanuel Morck
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Force Measurement Appropriate To Specific Purposes
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Abstract
9307. Morck, E. April 22 Energy meters.-In a Ferraris induction motor meter for a single alternating current, variation in the damping effect of the main-current electromagnet c is balanced by providing an additional torque proportional to the cube of the current. This torque may be produced by an auxiliary main-current coil d containing laminated iron arranged so that the magnetization produced in it is approximately proportional to the square of the magnetizing force, to act on the rotor a. The ordinary pressure electromagnet is shown at b.
GB190409307D1904-04-221904-04-22Improvements in Alternating Current Meters on Ferraris' Principle.
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