Transformer ratio-arm bridge with improved balancing means

Details Transformer ratio-arm bridge with improved balancing means Transformer ratio-arm bridge with improved balancing means

1976-04-19

1977-10-18

Tokar, M.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Plural inputs

324 60C, 324DIG1, G01R 700

Patent

active

040548368

ABSTRACT:
A bridge circuit of the transformer ratio-arm type includes a feedback circuit that is responsive to the output winding of the transformer and that is connected to produce in the transformer a compensating magnetomotive force in such direction as to reduce the unbalance between the magnetomotive forces produced by the two ratio windings. The compensating magnetomotive force may be produced in various ways, as for example, an output current from the feedback circuit may be applied to either one of the ratio windings of the transformer or to a further auxiliary winding of the transformer to generate the compensating magnetomotive force.

REFERENCES:
patent: 2570218 (1951-10-01), Draganjac
patent: 3842344 (1974-10-01), Povey

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