(5) 1/4" ID Snap-On Ferrite Cores < Suppress EMI / RFI Noise and Interference >

Description

¼" ID Snap On Ferrite Cores
1202
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(5)
Snap-On ¼"
ID
Ferrite Filters
EFFECTIVE
EMI / RFI Blocker. Easy to Install and remove.
Price is for (5) pcs
I've used ferrite cores to eliminate EMI / RFI problems in the HF, VHF and UHF spectrum. Examples: severe noise on my shortwave radio, triggering electronic light switches and false tripping of my home alarm system. These things really work!
INSTALLATION: Simply snap to lock over any coax, audio, AC or DC power cable up to 1/4" diameter. Perfect size for RG-59. Fits most audio and microphone cables. Smaller cables can be looped with multiple turns for exponential gains in EMI / RFI attenuation.
To save space, you can discard the plastic shell and just tape the core halves together. [See lower left picture below.]
Application Information
Ferrite Cores work at
either end
of the noise path through the wiring.
At the
SOURCE
, attenuates EMI / RFI from transmitters or electrical noise from equipment (computers, motors, fluorescent lights) before it gets into the house wiring through the power cord. Because, once the noise makes it to the house wiring, it can travel through the wiring directly to your radio, TV, computer etc. OR the wiring can act as an antenna and 'broadcast' interference to nearby battery operated equipment too.
At the
RECEIVER
, attenuates electrical noise generated by all kinds of AC powered equipment traveling through the house wiring before it gets to your radio, TV, computer, etc. BUT, again, the wiring can act as an antenna and pickup RF Interference from nearby sources such as mobile radios. So, placement close to the receiver, TV, etc., may be best in that situation.
Bi-Directional Protection
: Ferrite cores can provide bi-directional protection too. 'Touch lamps' are a good example. They are strong RFI generators when ON and are susceptible to being turned on or off by strong RF fields. Ferrite cores installed close to the lamp base will work both ways.
Attenuate EMI / RFI or electrical noise picked up by long microphone and audio cables. Multiple units spaced along long lines, can alter (detune) the resonant frequency of cables and more evenly distribute the attenuation for better performance.
Generally, placement should be as close to the equipment as possible for maximum attenuation, but as experienced RF technicians know, sometimes, a better location can be determined experimentally.
Great for field operations when working in unfamiliar outdoor environments and you need to reduce the risk of a nearby mobile CB, HAM or other transmitter getting into your
PA
,
Music
sound system or
Video
equipment.
Here are some common and a few
not so common applications:
Antenna Coax - Decouple a feed line to stop it from acting as a radial.
Mobile Transceivers - on DC power cables to reduce ignition interference.
Keep noisy
Fuel Pump
interference out of your expensive car electronics.
Filter radio signals out of your telephone lines.
Reduce RF interference to your TV, VCR, Stereo and DVD player.
Eliminate false triggers to your burglar alarm caused by strong RF fields.
Block RFI emissions from electronic equipment such as Digital Scales.
Suppress RFI emissions from electronically controlled DC motors.
Stop those SPOOKY 'Touch Lamps' from switching on/off unexpectedly.
FC.25-5
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Condition of Goods
Unless otherwise noted above:
NOS (New Old Stock) or better, clean, unused
30 day Non-DOA, Good-on-Arrival Guarantee
Untested, but NO JUNK or suspect parts
PCB parts are thru-hole, NO SMD/SMT
Small parts may be bulk packed
Manufacturers and Date Codes may vary
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IMPORTANT: The parts we sell are categorized as new because they are unused, but many of our parts are those rare, hard-to-find, discontinued, manufacturing surplus and
/
or old stock commonly known in the parts business as 'NOS' (New Old Stock). Some of our stock pictures show date codes which may vary from the actual product shipped.
Parts from a larger OEM package may be repacked for smaller lot size orders or for more practical handling and shipping.
We strive to give full and accurate descriptions to earn your 5-Star Feedback. Any known deficiencies are listed in the detailed description. Datasheets are provided when available. Some datasheets may be close but not a perfect match because of part revisions or because they may be from a different manufacturer. If you have any questions concerning our products please email us before purchasing. Your complete satisfaction is important to us before and after the sale. Thank you.