OPTICALLY ISOLATED CURRENT-TO-VOLTAGE CONVERTER FOR AN ELECTRON OPTICS SYSTEM

Authors
Citation
A. Band et J. Unguris, OPTICALLY ISOLATED CURRENT-TO-VOLTAGE CONVERTER FOR AN ELECTRON OPTICS SYSTEM, Review of scientific instruments, 68(1), 1997, pp. 250-251
Citations number
1
Categorie Soggetti
Physics, Applied","Instument & Instrumentation
ISSN journal
00346748
Volume
68
Issue
1
Year of publication
1997
Part
1
Pages
250 - 251
Database
ISI
SICI code
0034-6748(1997)68:1<250:OICCFA>2.0.ZU;2-S
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-1 mu A On the biased elements of an electron optic s system at voltages up to 3.5 kV. The design takes advantage of low-l eakage, low-power complementary metal-oxide semiconductor operational amplifiers as well as Linear optocouplers to create a low-noise batter y-powered front end with an expected battery life of three years using a single 9 V lithium battery.