I have some more information. The gauss meter that is used has a voltage out port. The output of the Gauss meter is then sent to a Data acquisition channel which has impedance specs of 10Gohm in parallel with 100pF.
If the test is tried at higher frequencies, the phenomena is more pronounced.
Thank you for your replies.
The cores were annealed.
My calculations show that we are not at saturation at these levels. I am assisting someone on this, I will get back with the filter and coupling information shortly.
I have an experiment which I am creating a step response into an electro-magnet. The principle frequency is 60hz. Core is hyperco 50 inductance of the coil is about 25mH. My output is measured with a gauss meter. When I change the drive amplitude, I am getting the amplitude change in the...
