Current sensor output modification. PIC or opamp or something else?

[retepsnikrep]

An example schematic of your idea would be kind Pedja.

Thanks for responding.

I basically have this so far.

A potential divider activated by the MOSFET turning on and an non inverting unity gain opamp buffer.

When the mosfet is on output is reduced by the PD ratio R2 and R3.

R1 & R2 are out of my control in the equipment I am trying to modify.