Longitudinal balance measuring bridge circuit

Details Longitudinal balance measuring bridge circuit Longitudinal balance measuring bridge circuit

2007-10-16

2007-10-16

Benson, Walter (Department: 2858)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Analysis of complex waves

C324S666000, C324S669000

Reexamination Certificate

active

11517042

ABSTRACT:
A longitudinal balance measuring bridge circuit includes a common mode signal injection circuit in the form of a center tapped, 4:1 balanced matching transformer. The signal injection circuit is coupleable to an item under test (IUT) and to a source of common mode signal, and provides the common mode signal to the IUT. The common mode signal injection circuit includes balanced outputs. A common mode filter is coupled to the balanced outputs of the common mode signal injection circuit and attenuates the common mode signal. The common mode filter also includes balanced outputs on which are provided a transverse signal resulting from the common mode signal provided to the IUT. A signal output balun is coupled to the balanced outputs of the common mode filter and converts the transverse signal to an unbalanced signal.

REFERENCES:
patent: 5095291 (1992-03-01), Staschover et al.
patent: 2176301 (1986-12-01), None
International Telecommunication Union,Measuring arrangements to assess the degree of unbalance about earth.Series O: Specifications of Measureing Equipment. Mar. 1999.

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