DocumentCode
1235005
Title
High current injection effects of the switching JFETs in the current electrometers
Author
Rajput, S.S. ; Garg, S.C.
Author_Institution
Radio Sci. Div., Nat. Phys. Lab., New Delhi, India
Volume
45
Issue
1
fYear
1996
fDate
2/1/1996 12:00:00 AM
Firstpage
314
Lastpage
316
Abstract
The performance of JFET as a switch in the feedback loop of a multigain ranging current electrometer is described. The study indicates that the electrometer starts departing from linear behavior as the input current becomes comparable to the drain saturation current of the JFET. It is shown that the nonlinearity in the electrometer behavior is attributable to the variations occurring in the ON resistance and gate current of the JFET
Keywords
circuit feedback; electric current measurement; electrometers; field effect transistor switches; transducers; ON resistance; current to voltage transducer; drain saturation current; feedback loop; gate current; high current injection effects; linear behavior; multigain ranging current electrometer; nonlinearity; switch; switching JFET; variations; Area measurement; Atmospheric measurements; Current measurement; Dynamic range; Electric resistance; Feedback; Leakage current; Particle measurements; Switches; Voltage;
fLanguage
English
Journal_Title
Instrumentation and Measurement, IEEE Transactions on
Publisher
ieee
ISSN
0018-9456
Type
jour
DOI
10.1109/19.481357
Filename
481357
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