Abstract
자속계의 경우 입력전압을 적분하여야 되기 때문에 연산증폭기의 입력 바이어스 전류가 있으면 적분기의 출력이 드리프트하게 된다. 본 연구에서는 이 드리프트를 자동으로 측정하고 보상하기 위하여 전압변동이 없는 디지털 sample and hold증폭기를 자속계에 도입하여 제작하였다. 개발한 자속계의 경우 적분기의 시간상수 <TEX>$RC=10^{-3}$</TEX> s에서 드리프트가 <TEX>$5{\times}10^{-8}\;Wb/s$</TEX> 이하였다. Output voltage of the flux-meter has always drift due to the input bias current of non-ideal operational amplifier. In this study we have employed a digital sample and hold amplifier which has no voltage drop to compensate drift of the flux-meter automatically. The drift of the developed flux-meter was smaller than <TEX>$5{\times}10^{-8}\;Wb/s$</TEX> for the integration time constant of <TEX>$RC=10^{-3}$</TEX> s.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
