Off Center Fed (OCF) Antennas

1008627775 - Off Center Fed (OCF) Antennas
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Wall Wart RFI Noise Filter Pack (5 filters)

Store/RFI Solution Kits/Radio Communication RFI Solutions/Common Mode Noise Filter - AC or DC Power
SKU RFI-WW-5
$16.95
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Wall Wart RFI Noise Filter Pack (5 filters)
Store/RFI Solution Kits/Radio Communication RFI Solutions/Common Mode Noise Filter - AC or DC Power
Product Details
MPN: RFI-WW-5
Country/Region of Manufacture: United states
Filter Power Rating (PEP watts): not applicable
RFI Suppression Range (MHz): .1-10 MHz
# Ferrite Filters: 5
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 5 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.

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OCF antennas are very convenient as they will allow multiple bands of operation with a simple wire antenna which is fed off center with a 4:1 OCF Current balun with built in feed line choke,