A stable electrometer amplifier for space-borne instruments

Das, S. R. ; Sridharan, R. ; Sidhu, J. S. (1984) A stable electrometer amplifier for space-borne instruments Journal of Physics E - Scientific Instruments, 17 (8). pp. 638-639. ISSN 0022-3735

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Official URL: http://iopscience.iop.org/0022-3735/17/8/002

Related URL: http://dx.doi.org/10.1088/0022-3735/17/8/002


The use of electrometer amplifiers for ultra-low current measurements is briefly reviewed. One important aspect viz. the DC drift due to environmental changes is outlined. A novel feedback technique by which this problem is effectively solved is described and the application of this technique to low-current measurement in general and to space-borne instruments in particular is discussed.

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