Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Thin-Film Chromel-Alumel Multijunction Thermal Converter with Low Output Resistance

저출력저항의 박막 크로멜-알루멜 다중접합 열전변환기

  • Cho, Hyun-Duk (School of Electronic & Electrical Eng., Kyungpook National Univ.) ;
  • Kim, Jin-Sup (School of Electronic & Telecommunication Engineering, Inuje Univ.) ;
  • Shin, Jang-Kyoo (School of Electronic & Electrical Eng., Kyungpook National Univ.) ;
  • Lee, Jong-Hyun (School of Electronic & Electrical Eng., Kyungpook National Univ.) ;
  • Lee, Jung-Hee (School of Electronic & Electrical Eng., Kyungpook National Univ.) ;
  • Park, Se-Il (Division of Electromagnetic Metrology, Korea Research Institute of Standards and Science) ;
  • Kwon, Sung-Won (Division of Electromagnetic Metrology, Korea Research Institute of Standards and Science)
  • 조현덕 (경북대학교 전자전기공학부) ;
  • 김진섭 (인제대학교 전자정보통신공학부) ;
  • 신장규 (경북대학교 전자전기공학부) ;
  • 이종현 (경북대학교 전자전기공학부) ;
  • 이정희 (경북대학교 전자전기공학부) ;
  • 박세일 (한국표준과학연구원 전자기연구부) ;
  • 권성원 (한국표준과학연구원 전자기연구부)
  • Published : 2000.07.31
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Abstract

Thin-film chromel-alumel multijunction thermal converters with a low output resistance of $64{\sim}85\;{\Omega}$ showed approximately the square law-dependent input-output relation. The voltage responsivities were very low with $0.34{\sim}0.67\;V/W$ in air and $1.15{\sim}1.48\;V/W$ in vacuum, respectively, and the ac-dc voltage transfer error was very large with about +340 ppm in the frequency range of $40\;Hz{\sim}10\;kHz$ in the case of 1 V-input sinewave rms voltage. It can be concluded that the large transfer error of the thermal converter was mainly caused by the low voltage responsivity and the large heat loss due to low output resistance, which implies that the optimization for small ac-dc transfer error is required.

$64{\sim}85\;{\Omega}$의 저출력저항을 갖는 박막 크로멜-알루멜 다중접합 열전변환기의 입력-출력 관계는 근사적으로 제곱법칙을 따랐지만, 전압 감응도는 공기 중 및 진공 중에서 각각 $0.34{\sim}0.67\;V/W$ 및 $1.15{\sim}1.48\;V/W$로서 매우 작았고, 공기 중에서 교류-직류 전압 변환오차는 입력이 1 V의 정현파 실효전압일 때 $40\;Hz{\sim}10\;kHz$의 주파수 범위에서 약 +340 ppm으로서 매우 크게 나타났다. 열전변환기의 큰 변환오차는 주로 저출력저항으로부터 기인된 작은 전압 감응도 및 큰 열손실 때문으로 생각되고, 따라서 작은 교류-직류 변환오차를 얻기 위한 최적화가 필요하다.

Keywords

References

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