RF Current Probes Episode 7 - Homemade Probe & Null Experiment

[@jialongqu9427]

Wow, this is exactly what I was expecting. Thanks for the new video! One more question: inside the toroid, what was the cutout area for? Will it achieve better E-field shielding capability if we close the gap?

[@jialongqu9427]

Ok, we may need to create a path for the magnetic field for inductive coupling. The copper shield is increasing the 'overlap area' and 'parasitic capacitance', so that the voltage built up on it is reduced. So we don't need a closed surface. Is this correct?

[@MachOneDesignEMC]

Exactly!