DocumentCode
2276590
Title
Determination of the farad from dc quantum hall effect, by using digital ac bridges
Author
Trinchera, B. ; Elia, V.D. ; Callegaro, L.
Author_Institution
Ist. Naz. di Ricerca Metrologica (INRIM), Torino
fYear
2008
fDate
8-13 June 2008
Firstpage
116
Lastpage
117
Abstract
A new traceability chain for the derivation of the farad from dc quantum Hall effect is under characterization at INRIM. Main steps are performed by new ratio and quadrature coaxial ac bridges. The bridges are based on a polyphase digital synthesizer and do not employ variable dividers or impedances to achieve equilibrium. Preliminary measurements show an agreement, between the new farad determination and the maintained unit, better than 2 times 10-7.
Keywords
capacitance measurement; digital circuits; dividing circuits; electric impedance; quantum Hall effect; dc quantum Hall effect; polyphase digital synthesizer; quadrature coaxial ac bridges; variable dividers; variable impedances; Bridge circuits; Calibration; Capacitors; Coaxial components; Electrical resistance measurement; Frequency; Hall effect; Impedance measurement; Quantum capacitance; Synthesizers;
fLanguage
English
Publisher
ieee
Conference_Titel
Precision Electromagnetic Measurements Digest, 2008. CPEM 2008. Conference on
Conference_Location
Broomfield, CO
Print_ISBN
978-1-4244-2399-6
Electronic_ISBN
978-1-4244-2400-9
Type
conf
DOI
10.1109/CPEM.2008.4574680
Filename
4574680
Link To Document