Hi, I need some guidance or basic starting point on this. I need to generate a current that is the difference of two currents. One of the currents is constant at ~ 25mA and the other (input current) can vary from 0 to 1000mA. My original idea is to do a I-V conversion on the two inputs, do a voltage subtraction of the two using a basic opamp difference circuit and then an V-I circuit to convert back to current...but there has to be a cleaner way. Owais

- posted
16 years ago