Amazon.com: 20 Pcs Snap on Ferrite Core Cord Ring RFI EMI Noise Filter Suppressor Cable Clip for 3.5mm/5mm/7mm/9mm/13mm Diameter Cable, Black : Electronics
LED Light RFI kit - 1 Filter for AC Power Line RFI Suppression .15-10 MHz - Slip On Ferrite Beads - Palomar Engineers®
AC/DC Generator RFI Noise Filter Kit - 3" ID - 2 filters - Slip On Ferrite Beads - Palomar Engineers®
How Do Ferrite Beads Work and How Do You Choose the Right One? | PCB Design Blog | Altium
Amazon.com: Konohan 20 Pieces Ferrite Bead Clip on Ferrite Core Ferrite Noise Supressor Ferrite Rings RFI EMI Noise Filter Cable Clip for USB Video Data Cable, 0.11/0.19/0.27/0.35/0.51 Inch Inner Diameter, Black : Electronics