Re: Solve Simple Relationship

On Fri, Aug 27, 2021 at 11:13 AM Thomas D. Dean <[email protected]>
wrote:

> On 8/27/21 8:09 AM, 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
>
> And, worse, I can not clearly state the problem:  rfesistance = voltage.
>
>
>
I think that you are making it too hard.

Choose r1 say 1000
 now calculate r2 from your first eq.
I get 998.06




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