I’m new in this forum and I would like to thank you all for so much info posted here.
I don’t now if this was posted before and if so could you please redirect me to that post?
I also google it but didn’t get any answer.
I’m making a small project using a microcontroller to measure up to 1A / 230V. I need the circuit to be insolated from mains so using a shunt resistor solution is a no go.
As the microcontroller have a max input of 3.3V I’m thinking in using a CT to interface. The ouput of this signal would then be added to 1.5 DC so I would have close to 0V in negative peak and 3V to the positive one.
Now there’s were my problem begins: The right CT for the job. I’ve thought in chosing the CST-1005 from Triad Magnetics but it’s rated to 5A. Would a primary multi-turn/multi-winding be the solution to measure up to 1A with this transformer with enough sensitivity? In that case what would be the appropriate burden resistor to do the job?
I’ve bought and tried to use an Murata 56050C and no joy so would the CST-1005 be a solution for my problem?
Thanks for any help you could give me!