Thermistor

[matt_crouch]

1. The problem statement, all variables and given/known data

A thermistor's temperature dependence is given by R=R0eb/t
where R is in ohms T is in Kelvins R0 and B are constants to be found.

a) If R =7360 at the ice point and 153 at steam point find R0 and B

2. Relevant equations



3. The attempt at a solution

I took logs so

LnR=R0B/T
rearranged so
(LnR)T/B=R0

then get simultaneous equations but the constant i am trying to find so for this example B are just going to cancel?

(Ln153)x373.15/B = (Ln7360)x273.15/B

Thanks in advance

[OmCheeto]

1. The problem statement, all variables and given/known data

A thermistor's temperature dependence is given by R=R0eb/t
where R is in ohms T is in Kelvins R0 and B are constants to be found.

a) If R =7360 at the ice point and 153 at steam point find R0 and B

2. Relevant equations



3. The attempt at a solution

I took logs so

LnR=R0B/T


Shouldn't that be LnR=LnR0 + B/T ?