대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

복소유전률 측정장치의 연구개발 - 컴퓨터제어 복소유전률 측정장치 -

A study on the computer-controlled measuring device of complex dielectric constant

  • 남징락 (부산공업대학교 전기공학과) ;
  • 엄상오 (부산공업대학교 전기공학과) ;
  • 강대하 (부산공업대학교 전기공학과)
  • Nam, J.R. (Pusan National University of Technology dept. of Electrical Engineering) ;
  • Eum, S.O. (Pusan National University of Technology dept. of Electrical Engineering) ;
  • Kang, D.H. (Pusan National University of Technology dept. of Electrical Engineering)
  • 발행 : 1993.07.18
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초록

This paper is to study and realize a measuring device for complex dielectric constants. The device is consisted in order of interface unit, external RAM, programmable counter, D/A converter, measuring circuit, Sample & Hold circuit, A/D converter and related control circuits. Various excitation waves are digitalized and sent to the 4096 static RAM by personal computer. These data saved in the RAM are converted to analog excitation waves through D/A converter. The frequency of excitation wave is depend on the read-out speed of the RAM according to clock pulses. Such generated waves are applied to dielectrics under test and their responses are sampled and converted to digital data through A/D converter. The computer takes the digital data and calculates finally the complex dielectric constants. The frequencies for Measurement ranges from 0.04 Hz to 10 kHz.

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