Title :
Comparison of MIKES and PTB precision current sources based on capacitor charging
Author :
Iisakka, I. ; Willenberg, G. -D ; Seppälä, J. ; Manninen, A.
Author_Institution :
MIKES, Espoo, Finland
Abstract :
A new traceable low current source based on charging a capacitor by a ramp generator consisting of two digital-to-analog converters has been developed by MIKES. The current source has been compared with the ramp generator current source of PTB at currents between 10 fA and 100 pA. No significant deviations were observed at uncertainty levels ranging from about 20 μA/A at 100 pA to about 7 mA/A at 10 fA.
Keywords :
capacitors; constant current sources; digital-analogue conversion; ramp generators; MIKES; PTB precision current sources; capacitor charging; current 10 fA to 100 pA; digital-to-analog converters; ramp generator; traceable low current source; Calibration; Capacitors; Digital-analog conversion; Generators; Standards; Uncertainty; Voltage measurement; DAC; Low current; digital-to-analog converter; femtoampere; gas capacitors;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-0439-9
DOI :
10.1109/CPEM.2012.6250706
