Hello, I'm working on a project and I need some assistance. I need to adjust the negative supply voltage to an integrator opamp that I use for DC offset control based upon the resistance in a voltage divider elsewhere in the design. R12 is the trimmer resistor to adjust the CVS circuit and V5 is the power supply that I need to adjust based upon the resistance of R12. So I need some sort of mechanism that will measure the resistance of R12 and then increase the power supply voltage as the resistance of R12 decreases. I need amount of adjustment to be adjustable as well. Any ideas?