On Friday, 27 August 2021 16.09.33 WEST Thomas D. Dean wrote:
I have a voltage divider I want to calibrate. I tried this by exchanging
the resistors and measuring the resultant rfesistance.
1.6516 = 3.3 * R1 / (R1 + R2)
1.6484 = 3.3 * R2 / (R1 + R2)
R1 is around 1005 ohms
R2 is around 1003 ohms
I think this is simple. But evidently, it is beyond me.
Tom Dean
As others said your equations are the same, that is
1.6516 = 3.3 * R1 / (R1 + R2) <=> 1.6484 = 3.3 * R2 / (R1 + R2)
So you do not have 2 but just 1 equation.
Note that 1.6516 + 1.6484 = 3.3.
So you really need another equation to resolve this problem. :-)