I am having a little trouble sensing the current on a high impedance load. I am using Multisim blue to simulate the circuit I built and it works fine on the simulation but it real life it just does not work. the only difference I have in real life is that I am using a transformer less power supply to supply my 14VDC, Yes, I have it in a plastic box and I only have the positive and negative DC leads coming out of it. I am aware of the risks. The problem I am having in real life is when I do not have a load hooked up through my CT transformer I get 1.7VAC on the output of my op amp and connecting my load does not really seem to make much of a difference on the output. In the simulation however when there is no load on my CT transformer I only have 187 mV and then when I connect my high impedance load the voltage shoots up to 5.45VDC which is what I need. By the way, on my simulation I could not find a CT transformer to use so I had to use a voltage transformer. I changed the characteristics to have 35H constant inductance, 1 turn primary, 1500 turns (45.5 ohms) secondary. Also I am using my op amp in a closed loop configuration with 401 gain. Any help on this circuit would be very much appreciated. Also I am new to this forum so if there is anything I left out or if I posted this in the wrong section please let me know. Thank you for your time.