I am designing a circuit to read voltage and current of a heat sealing band with AD7606. Measurement section of schematic is below.
I have two problems.
First; In a short circuit condition output of current transformer will be very high that can cause problem for OP07. How can I protect it without effecting performance.
Second; How can I construct a ground plane to minimize current return path errors caused by measurement circuit and digital part of the circuit.
I have search and read a lot and this it best I can come up with.
Does any one has a sugestion about it?