Skip to main content
4 events
when toggle format what by license comment
Mar 30, 2021 at 14:01 comment added CatastrophicFailure 1. Yes, agree. 2. This is something I experienced differently. I’ve seen many commercial designs incorporating such devices. Also, manufacturers have quite a remarkable lineup on CM chokes and TVS diodes for USB application which must be profitable somehow (my opinion) 3. This is weird but you’re right. They specify the COMMON-MODE impedance to 90 ohms instead of the DIFFERENTIAL-MODE impedance to be 90 ohms. WHY? 4. Seems right but bigger chokes again have also much lower differential impedance than 90 ohms which is worse again. Would imply there is no way to build reasonable devices
Mar 30, 2021 at 2:39 history edited Ale..chenski CC BY-SA 4.0
edited body
Mar 30, 2021 at 2:35 comment added Ale..chenski See also murata.com/~/media/webrenewal/products/emiconfun/mail/2011/09/… for many variants of CMCs and their differential impedance characteristics
Mar 30, 2021 at 2:25 history answered Ale..chenski CC BY-SA 4.0