ELECTRODYNAMIC COMPARATOR OF VOLTAGE, CURRENT AND POWER Russian patent published in 2007 - IPC G01R17/08 

FIELD: the proposed invention refers to electrical measuring technique and designed for using at reference measurements of voltage, current and power in a wide range of measured values and frequencies.

SUBSTANCE: the aim of the invention is to reduce reactivity of unmovable and mobile coils of a electrodynamic comparator and also increase sensitiveness of the comparator. The proposed electrodynamic comparator has a mobile system in the shape of two coils on a common axle, fastening elements of a mobile system, unmovable coils, an arrangement for providing identity of electrodynamic converters, an indicator of zero and small flags of a photoelectrical converter of the angle of the turn of the mobile system into an electrical signal. At that the mobile system is fulfilled in the shape of a lateral horizontal beam on whose edges two unmovable and one mobile coils are fulfilled as flat conductors, the mobile coil is located between the unmovable coils, one turn of the unmovable coils is fulfilled mobile. At that the points of changing direction by the conductors of the unmovable coils of the electrodynamic converters are fulfilled deflected on 90 degrees from the horizontal conductors and the fastening elements are fulfilled in the shape of four braces from each side of the axle of the mobile system.

EFFECT: reduces reactivity and increases sensitiveness of a comparator.

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