Skip to main content

Web Publications


AAVSO: Electronic Journal of the AAVSO (eJAAVSO) AAVSO HOME > publications > ejaavso

 
 
eJAAVSO

A FET* Operational Amplifier Circuit for Photoelectric Photometry

pdf    ps

 

Arthur J. Stokes

Hudson, Ohio

 

Abstract

 

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

 
 
  search engine |  site map |  links |  contact us
 

Keywords:
AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484