Thermocouple-Uses and how it Works?

[PWhiting1]

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.

 

[mgb_phys]

Not sure what you mean by looking at the current in the diode.
An intersting (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.