With the aim of the determination of an optimum value of the forward current for diode thermometers, the V versus I characteristics of two types of industrial diodes (1 N4001-6 and BYP 401) and the diode thermometers DT 500 and DT 470 have been measured in the temperature range 4-300 K. All types of
Effect of current on the low temperature characteristics of diode sensors
β Scribed by V. Chopra; G. Dharmadurai
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- English
- Weight
- 506 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0011-2275
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β¦ Synopsis
We have investigated the voltage-temperature characteristics of p-n junction diodes and point contact diodes down to liquid helium temperatures. We observe that the current through these diodes plays a significant role in deciding the sensitivity as well as in limiting the temperature range of relatively linear response of the diodes when used as cryogenic temperature sensors. The interesting consequences of these observations are discussed.
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