Title :
Ramped Capacitor Current Source with Software Controlled Non-Linearity Compensation
Author :
Van den Brom, Helko E. ; de la Court, P. ; Rietveld, Gert
Author_Institution :
NMi Van Swinden Laboratorium, Delft
Abstract :
A high accuracy ramped capacitor current source has been developed with software controlled compensation for the voltage ramp non-linearity. Within several seconds, a voltage ramp within typically 10 ppm of any desired value between a few mV/s and several hundreds of mV/s can be reached. Using a high quality air capacitor, high accuracy currents below 10 pA can be generated
Keywords :
capacitors; compensation; constant current sources; air capacitor; ramped capacitor current source; software controlled nonlinearity compensation; Capacitors; Circuits; Current measurement; DC generators; Electric variables measurement; Laboratories; Resistors; Time measurement; Voltage control; Voltmeters;
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.2004.305443
