Dr. Zhang, thank you for the excellent videos! Would you like to introduce a little bit about how you made the homemade current probe and how you measured the transfer impedance? Really interested in its performance compared to the commercial ones. Appreciate.
Hi JiaLong, thanks, see this emccompliance.co.uk/wp-content/uploads/2022/03/The-magic-Loop-3.pdf . There is a lot more on emccompliance.co.uk feel free to share
@MachOneDesignEMC Yes, I saw it a few months ago, and I still don't think ferrites can prevent RF interference from penetrating. also, do you think toroidal cores (iron powder cores) would work better for lower frequencies?
Hey, there is a huge amount of esports players suffering from rfi/emc or some kind of emi we are still not sure yet. can you please make a video on how it can have an impact on electronics/computers
My issue is as a engineer is the ferrite core of any power transformer is inductance no matter how tight I wound the turns in phase the capacitance always end up to be there in 8 or 9 nf even commercial transformer has the same capacitance and ringing is always there when current is drawing pass 20 amp and this is my issue I even use copper trip to cover the transformer and connect to ground the ringing still there I have to use a iron powder core and 450uf capacitor to remove the oscillation from the current sensor transformer to stop the ringing of the transformer when over current pass
The parasitic capacitance is always there, sometimes, you can place some broadband ferrite sleeves on the co-axial cables to block possible E-field coupling between the DUT and the metallic case of an RF current probe.
Dr. Zhang, thank you for the excellent videos! Would you like to introduce a little bit about how you made the homemade current probe and how you measured the transfer impedance? Really interested in its performance compared to the commercial ones. Appreciate.
Hi JiaLong, thanks, see this emccompliance.co.uk/wp-content/uploads/2022/03/The-magic-Loop-3.pdf . There is a lot more on emccompliance.co.uk feel free to share
@@MachOneDesignEMC Nice documents. Thanks a lot for sharing. 👍
hi, I have been wanting to ask you, how I can prevent an HDMI cable from acting as an antenna for RFI?
Hi Simba, i have a video on this. see ruclips.net/video/jYR49UghNj4/видео.htmlsi=r94yUgrOPxvVn9wV
@MachOneDesignEMC Yes, I saw it a few months ago, and I still don't think ferrites can prevent RF interference from penetrating.
also, do you think toroidal cores (iron powder cores) would work better for lower frequencies?
Hey, there is a huge amount of esports players suffering from rfi/emc or some kind of emi we are still not sure yet. can you please make a video on how it can have an impact on electronics/computers
My issue is as a engineer is the ferrite core of any power transformer is inductance no matter how tight I wound the turns in phase the capacitance always end up to be there in 8 or 9 nf even commercial transformer has the same capacitance and ringing is always there when current is drawing pass 20 amp and this is my issue I even use copper trip to cover the transformer and connect to ground the ringing still there I have to use a iron powder core and 450uf capacitor to remove the oscillation from the current sensor transformer to stop the ringing of the transformer when over current pass
The parasitic capacitance is always there, sometimes, you can place some broadband ferrite sleeves on the co-axial cables to block possible E-field coupling between the DUT and the metallic case of an RF current probe.