Title :
Fabrication of a standard two-stage autotransformer at LNE
Author :
Sindjui, R. ; Gournay, P. ; Thevenot, O. ; Thuillier, G.
Author_Institution :
Lab. Nat. de Metrol. et d´Essais (LNE), Trappes, France
Abstract :
The comparison of electrical quantities expressed in units of the international system of units and the same quantities generated from quantum effects is a direct way of determining physical constants. The determination of the quantum of resistance RK from a calculable capacitor is part of this process. In such an experiment, various impedance bridges are used whose main part is a two-stage transformer. We describe in this paper a new two-stage autotransformer currently built and characterized at LNE.
Keywords :
autotransformers; bridge circuits; capacitors; constants; electric resistance measurement; quantum well devices; units (measurement); LNE; capacitor; electrical quantity; impedance bridges; international system of units; physical constant determination; quantum effects; standard two-stage autotransformer fabrication; Capacitors; Magnetic cores; Magnetic noise; Magnetic shielding; Saturation magnetization; Uncertainty; Windings; Transformers; calibration of transformers; electrical metrology; impedance bridges; uncertainty;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4799-5205-2
DOI :
10.1109/CPEM.2014.6898513
