Ferrite Tutorials

Ferrite Mix Selection

Ferrite Cross Reference

Ferrite Toroid Tech Specs

Ferrite Chatter Noise

RF Toroid Calculator by VK3CPU

Ferrite Ring Mini Combo Pack, FT240 - 1.4" ID, 5 Rings - Mix 31, 43, 52, 61, 75, RFI Range .15-2000 MHz

In stock
Product Details
Brand: Palomar Engineers
UPC: Does not apply
MPN: FRCP-240-5
Type: NEW
Country/Region of Manufacture: United States

Not sure of your interference RFi frequency? Then try using each of the mixes on your RFI problem to determine which one works the best. This Ferrite Ring Mini-Combo 5 Pack is a convenient solution for troubleshooting RFI/EMI from unknown frequencies or multiple frequencies that require multiple suppression mixes. Included in this combo pack are five 2.4″ OD/1.4″ ID ring toroids as follows:

Mix 75 effective RFI from .15-10 MHz including AM Broadcast band – quantity: 1

Mix 31 effective RFI from 1-300 MHz for general purpose – quantity: 1

Mix 43 effective RFI from 20-250 MHz for general purpose – quantity: 1

Mix 52 effective RFI from 200-1000 MHz for general purpose – quantity: 1

Mix 61 effective RFI from 200-2000 MHz for cell phone, WIFI, HDTV, Cable TV interference – quantity: 1

Individually wrapped and labeled with effective RFI frequency range for easy identification

The ring toroids are useful for AC/DC common mode choking with multiple turns as shown below

20131210 114716 300x180 - Ferrite Tutorials

AC Cable on F-240 Toroid – 7 turns

20150125 103738 300x168 - Ferrite Tutorials

DC Cable on F240 – 4 turns

The ring toroids can also be used on coax or signal lines as shown below:

20131222 125533 300x180 - Ferrite Tutorials

RG58 12 turns on FT240

20131210 115137 300x180 - Ferrite Tutorials

Ethernet Cable on F-240 Toroid – 7 turns

For RFI/EMI wrap as many turns as possible (usually 6-12) for higher choking (under 30 MHz). For over 25-100 MHz, 1-3 turns om Mix 61 is usually sufficient. Chokes can also be cascaded in series to offer a broader frequency range.

Save this product for later