Temperature Measurement System
Pre-Lab: The range of resistor is (4366.7, 17653), so we choose 10k resistor.
This is the set up of the experience.
Voltage reading at room temperature 20.
Voltage reading temperature for heat from the body 37C.
Voltage reading at room temperature20C and heat from the body temperature 37C.
Resistor reading at room temperature20C and heat from the body temperature 37C.
Here is a video about our experiment.
The datas from Measuring.
We have a difference in voltage of 0.62 V, and the theoretical value of voltage drop should be 0.72 V, so it has a % difference of 13.8%.
Post Lab: We are then asked to design a new circuit that the output sensitivity of the device must be at least 0.1 V/degree. After our calculation, we find that it is impossible to get it. The maximumVoltage is 0.727 V at resistor 8579 ohm. Twhen the resistor at 8200ohm the design is most sensitive.
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