Subject TEMPERATURE EFFECTS IN DIODES A forwardbiased diode

Subject: TEMPERATURE EFFECTS IN DIODES

A forward-biased diode is used as a temperature sensor. To calibrate the sensor, the diode is placed in a melting ice and boiling water (assume you found a nice way to actually do this). The measured voltage drops are measured: 0.68 V for melting ice, and 0.48 V for boiling water. What is the temperature (in Kelvin) when the forward voltage drops of the diode is 0.618V?

Solution

for every 1 degree centigrate increase diode voltage drop by 0.002 volt

so the increase in temp is 31 degree centigrate