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Current and Voltage Monitor with AD7606

Question asked by dclm on Jun 27, 2012
Latest reply on Jul 9, 2012 by rezam

Hi,

 

I am designing a circuit to read voltage and current of a heat sealing band with AD7606. Measurement section of schematic is below.

measurement.jpg

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.

 

groundplane.jpg

 

Does any one has a sugestion about it?

 

Thanks,

 

Dogan

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