Thermocouple-Uses and how it Works?

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SUMMARY

This discussion focuses on the application of thermocouples in measuring temperature variations in diodes. Thermocouples are advantageous due to their small size, allowing easy attachment to diodes for accurate temperature readings. The forward voltage drop of diodes is temperature-dependent, making thermocouples a suitable choice for this investigation. A thermocouple reader or a digital voltmeter with built-in thermocouple functionality is necessary for data collection.

PREREQUISITES
  • Understanding of thermocouple operation and principles
  • Knowledge of diode characteristics and temperature dependence
  • Familiarity with digital voltmeters and thermocouple readers
  • Basic principles of electrical measurements
NEXT STEPS
  • Research the working principles of thermocouples and their types
  • Learn about the relationship between diode forward voltage drop and temperature
  • Explore how to use a digital voltmeter with thermocouple capabilities
  • Investigate experimental setups for measuring diode current at varying temperatures
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Students and researchers in electronics, particularly those studying semiconductor behavior and temperature measurement techniques.

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Thermocouple-Uses and how it Works?

Homework Statement


I need to investigate how current in a diode varies with extreme temperatures. I have no idea how to do this but could a thermocouple somehow be incorporated into the investigation.


Homework Equations


Can a thermocouple be used to investigate this


The Attempt at a Solution


I have no idea how a thermocouple works or what it exactly does, so i have no attempted solutions.
 
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Not sure what you mean by looking at the current in the diode.
An interesting (and useful) property of diodes is that the forward voltage drop depends on temperature - this is used as a temperature sensor.

It doesn't really matter what you use as a sensor to make your measurements, thermocouples have the advantage that they are fairly small and so can be easily attached to a diode. You will need a thermocouple reader - some digital voltmeters have them built in.
 

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