A traceable precision current source for currents between 100 aA and 10 pA

A new calibration setup for picoamperemeters is presented. Owing to the use of a novel voltage ramp generator with increased linearity, the useful measuring time is increased to about 35 min, which reduces the calibration uncertainty of picomaperemeters with long time constants.

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Bibliographic Details
Published in:IEEE transactions on instrumentation and measurement 2003-04, Vol.52 (2), p.436-439
Main Authors: Willenberg, G.-D., Tauscher, H.N., Warnecke, P.
Format: Article
Language:English
Subjects:
Absorption
Calibration
Capacitance
Capacitors
Circuits
Current measurement
Dielectrics
Electric potential
Generators
Instrumentation
Ramps
Stability
Time constant
Time measurement
Uncertainty
Voltage
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Description
Summary:A new calibration setup for picoamperemeters is presented. Owing to the use of a novel voltage ramp generator with increased linearity, the useful measuring time is increased to about 35 min, which reduces the calibration uncertainty of picomaperemeters with long time constants.
ISSN:0018-9456
1557-9662
DOI:10.1109/TIM.2003.810051