I have three unknown resistors arranged in a triangle (a delta) and need to determine one of them, which is on the order of 100x larger than the other two, in a measurement circuit. I'm wondering if there is a known best way to go about this practically.
Here's what I'm thinking. A brute-force way would be to set up a voltage divider to measure between every pair of nodes, one at a time, then solve the obvious system of equations. That's three separate measurement cycles and not so great precision. I don't think it's possible to get three independent measurements in a single measurement cycle (i.e., using three ADCs simultaneously) to solve the system, but maybe there is a clever way if I only need one resistor value and not the other two? Or, in terms of how to arrange everything for each measurement, is there a better way, using a bridge or somesuch, to make the measurement more precise (making best possible use of the ADC)?