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PIN DIODES AS CRYOGENIC TEMPERATURE SENSORS.

Author(s) : RANGANATHAN R.

Type of article: Article

Summary

TESTS OF SEVERAL SEMICONDUCTING COMPONENTS AS CRYOGENIC TEMPERATURE SENSORS. DRAWBACKS OF COMMERCIALLY AVAILABLE SEMICONDUCTOR DIODES: NEED FOR A PRECISION CURRENT SOURCE AND SPECIFIC CALIBRATION CHART FOR EACH SENSOR. THE AUTHORS LOOK FOR LINEAR TEMPERATURE RESPONSE WHICH WOULD ELIMINATE THE NEED FOR POINT TO POINT CALIBRATION AND RENDER THE DIODES INTERCHANGEABLE. THIS HAS BEEN OBTAINED BY EMPLOYING A PAIR OF MATCHED DIODES IN A DIFFERENTIAL CONFIGURATION. THE USE OF PIN DIODES IS SPECIALLY SUITABLE, IN THIS CASE, BECAUSE OF THE LOW SERIES RESISTANCE OF THE POWER DIODE. EXPERIMENTS WERE CARRIED OUT BY THE AUTHORS WITH PIN DIODES FABRICATED IN THEIR OWN LABORATORIES AND WITH COMMERCIALLY AVAILABLE BA 379 PIN DIODES. IT WAS FOUND THAT, IN BOTH CASES, A LINEAR VARIATION OF THE DIFFERENTIAL FORWARDS VOLTAGE COULD BE OBTAINED DOWN TO 50 K, OVER SEVERAL CYCLES OF WARM-UP AND COOL-DOWN. J. V.

Details

  • Original title: PIN DIODES AS CRYOGENIC TEMPERATURE SENSORS.
  • Record ID : 1982-1849
  • Languages: English
  • Source: Indian J. Cryog. - vol. 5 - n. 3
  • Publication date: 1980
  • Document available for consultation in the library of the IIR headquarters only.

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