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Calibration of low-current meters at nA level with the capacitance-charging method

Luca Callegaro, Vincenzo D'Elia
  • Abstract:
    The most accurate generation of dc currents in the lower ranges is performed with the capacitance-charging technique. Implementations of the method are typically limited to an upper current in the 100 pA range. Here we present a range extender which can be employed as plug-in in existing setups. The extender permits to scale the current of a ×10 factor and reach the nA range. Results of calibration of low-current meters with and without the use of the extender are reported.
  • Keywords:
    low current, calibration, picoammeter, dc current, capacitance
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  • DOI:
    _unreg_tc4-2013.016

Event details:

  • IMEKO TC:
    TC4
  • Event name:
    TC4 Symposium 2013
  • Title:
    19th IMEKO TC4 Symposium Measurements of Electrical Quantities (together with 17th TC4 IWADC Workshop on ADC and DAC Modelling and Testing)
  • Place:
    Barcelona, SPAIN
  • Time:
    18 July 2013 - 19 July 2013