Digital thermometer

Thread Starter

JoyAm

Joined Aug 21, 2014
126
I am supposed to be able to calculate the room temperature using this two diode circuit but i have no idea how, can you give me some hints ?
thanks in advance
Screenshot_4.png
 

Thread Starter

JoyAm

Joined Aug 21, 2014
126
Or not...
Vp=(k*T/q)*ln(I1/I2)
dVp/dT=0.139=(k/q)*ln(I1/I2)
so from that we can calculate the k/q
and then i dont know
 

Thread Starter

JoyAm

Joined Aug 21, 2014
126
Screenshot_5.png this looks like what i got on post #7 but still how can i use the gived dvp/dT to solve the problem ?
 
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