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[05-06, 2000] 

Journal of Electrical Engineering, Vol 51, 05-06 (2000) 138-142

AC BRIDGE WITH CONVERGENCE ANGLE CLOSE TO 90 DEGREES

Július Bajcsy - Vít Setnička

   Alternate current (AC) four arm bridges are equivalent to some form of voltage comparison methods. In a classical AC bridge, the voltage ratio on reference and tested impedances is measured by changing the values of an impedance divider composed of two known impedances. The procedure of bridge balancing as well as the convergence angle are important criteria for suitability of the bridge arrangement. This article presents a modification of a four arm bridge with 90° convergence angle design for measuring real as well as imaginary parts of impedance.

Keywords: AC bridge, angle of convergence, impedance measurement


[full-paper]


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