In the case #2 described in a previous post,
I want to measure the impedance of an electrode by injecting an AC current with only 1 current source.
It basically works.
By doing more tests, I saw that when I remove the reference probe, there is still a square wave measured by my channel 1.
As if the current from the current source on channel 1P was going somewhere. Channel 2 is not connected.
Any idea where the current flows ?
