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Optically Isolated Current to Voltage Converter in an Electron Optics System

Published

Author(s)

Alan H. Band, John Unguris

Abstract

A simple, inexpensive, optically isolated current-to-voltage converter circuit has been developed for the measurement of bipolar currents in the range of 10 pA to 1 %A on the biased elements of an electron optics system at voltages up to 3.5 kV. The design takes advantage of low-leakage, low-power CMOS operational amplifiers as well as linear optocouplers to create a low-noise battery-powered front end with an expected battery life of 3 years using a single 9 V lithium battery.
Citation
Review of Scientific Instruments
Volume
68
Issue
1

Citation

Band, A. and Unguris, J. (1997), Optically Isolated Current to Voltage Converter in an Electron Optics System, Review of Scientific Instruments, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=620473 (Accessed April 16, 2024)
Created December 31, 1996, Updated October 12, 2021