Wall Wart RFI Noise Filter Bulk Pack of 10 Filters
Product Details
MPN: RFI-WW-10
Type: New
Country/Region of Manufacture: United States
Filter Power Rating (PEP watts): not applicable
RFI Suppression Range (MHz): .1-10 MHz
# Ferrite Filters: 10
Typical Use:: wall wart power supplies - DC side
A simple ferrite ring filter (OD = 1.14", ID = .748") installed on the DC power cable of a wall wart power supply can help suppress the noise interference to nearby electronic devices by suppressing the fundamental switching frequency (usually under 1 MHz) and thereby suppressing harmonics at higher frequencies. This kit includes 10 filters useful for all types of devices powered by wall wart power supplies including laptop computer, routers, cable modems, wireless phone charges, USB chargers, etc.
Typical user comment:
The filter was quite effective. Was surprised that it actually reduced the noise level more than the signal so S+N/N improved by 1.9 S units. Bill