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A FET* Operational Amplifier Circuit for Photoelectric Photometry

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Arthur J. Stokes

Hudson, Ohio




Recent improvements in solid state semiconductor technology have resulted in a number of manufactures (Intersil, Signetics, Fairchild) offering low cost operational amplifiers with input resistances of the order of 10^12 ohms and input currents of the order of a few picoamperes. These components are ideal for the low current measurements made in stellar photometry. Along with low cost, these components are very small and extremely stable.


Link to ADS abstract, article and citation information

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