I'm designing a galvanostat using the simple AD711 as a start. I simulated the circuit using Proteus and everithing seems to work just right.
When I try to build it, The output of the U1 opamp goes to full scale (negative) and the non-inverting input raises from ground a few volts. This is my firts try with control loops, so I don't know if I'm doing anything wrong. Should I start the circuit in a specific way just to ensure the stability of the loop? Any specific value for the capacitor (tried 100nF, 10nF)?
Thanks for your time