Review on 🔒 12 Pcs Black Ferrite Choke Cable Rings, Roctee EMI RFI Noise Filter Snap-On Noise Suppressor Clips for 7MM Diameter Wire - Electronic Ferrites Core by Derek Cage

From the outside the chokes look good. Fasten them and move on. When I bought the filters, I noticed that there was no quality information about the properties of the filters or for which frequency range the material was chosen. I went with the usual assumption that they would work for normal DC and AC EMI problems. now i know why Ferrites have very low power. Because it is a "soft" ferrite, the composition of the material along with the annealing, sintering, and regrinding are critical to performance. This is an expensive process. Not what you find in Chinese mass production facilities. Chokes are very inexpensive and account for part of the cost of a good ferrite magnetic material. , the result is always the same. Don't get me wrong, they only work to a very limited extent, so I can't say they're "bad". And yes, I am allowed to disclose this information because I have tested it. with a spectrum analyzer, before and after.