Title :
Intercomparison of Precision Current Sources in the Range From 10 fA to 10 pA Between PTB and VNIIM
Author :
Willenberg, G.D. ; Tauscher, H.N. ; Pavlov, O.M. ; Korotkova, I.
Author_Institution :
Phys.-Technische Bundesanslalt, Braunschweig
Abstract :
An intercomparison of precision current sources was carried out for currents between 10 fA to 10 pA. The current sources of both PTB and VNIIM were based on the principle of charging a capacitor using a linear voltage ramp (Rozhdestvenskaya et al., 1979) and (Willenberg et al., 2003). The relative deviation for the values of the sources were found to be between 2.8middot10-4 and 3.1middot10-3, depending on the current range
Keywords :
capacitors; electric current measurement; measurement standards; 10 fA; 10 pA; PTB; VNIIM; capacitor charging; linear voltage ramp; precision current sources intercomparison; relative deviation; Calibration; Capacitors; Current measurement; Gain measurement; Instruments; Measurement standards; Metrology; Performance evaluation; Standards development; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2004 Conference on
Conference_Location :
London
Print_ISBN :
0-7803-8494-6
Electronic_ISBN :
0-7803-8494-6
DOI :
10.1109/CPEM.2004.305559
