I'm trying to find a cost effective solution.I need to drive a load with over 7A.There are opamps which can handle that sort of current but they are way to expensive (10 times more expensive than 3A output current opamp).So I am trying to design a circuit which can combine the output currents of each opamps together to give me the massive 7A , I need.I have attached the simple circuit which I have developed.The spice simulation of it works perfectly fine.But when I actually implement it,it does not work.Obviously the Opamps and resistors are not identical to each other in the two sets.Because of this output voltages of both opamps are not identical and hence current starts to flow into the output terminals from each other opamps.
So my question is, is there a better way to do this?
So my question is, is there a better way to do this?