MULTI-DECADE INDUCTIVE VOLTAGE DIVIDER Russian patent published in 2014 - IPC H01F21/12 

FIELD: measuring equipment.

SUBSTANCE: invention belongs to area of electric equipment. The multi-decade inductive voltage divider a toroidal ferromagnetic core, decades, each of which is executed in the form of a dividing winding and consists of K+1 sections, where K is the factor of decade division, having identical quantity of turns. Each section is executed as a cord consisting of two evenly braided isolated wires, which form separate windings that have been connected as matching and in series. Binary dividers are connected in series and in parallel. Middle branches of the first and the last form of binary dividers form the input of the dividing winding. The entrance of a dividing winding of the last decade is connected with a source of an input signal. The input of a dividing winding of the next decade is connected with a set of branches of the last decade means of the device of switching according to Kelvin-Varley scheme. Decades are placed on the general ferromagnetic core in layers, each layer forms sections in sectors of the core, decades are reeled up in a common cord created from eleven pairs of evenly braided isolated wires.

EFFECT: reduced error of a division factor in the field of low frequencies and alignment of target impedances of its decades.

2 cl, 1 dwg