|
|
Loading coil
In electronics, a loading coil is a coil that does not provide coupling to any other circuit, but is inserted in a circuit to increase its inductance.
Loading coils inserted periodically in a pair of wires reduce the attenuation at the higher voice frequencies up to the cutoff frequency of the low-pass filter formed by (a) the inductance of the coils and distributed inductance of the wires, and (b) the distributed capacitance between the wires. Above the cutoff frequency, attenuation increases rapidly.
A common application of loading coils is to improve the voice-frequency amplitude response characteristics of twisted cable pairs. When connected across a twisted pair at regular intervals, loading coils, in concert with the distributed resistance and capacitance of the pair, form an audio-frequency filter that improves the high-frequency audio response of the pair.
When loading coils are in place, signal attenuation increases rapidly for frequencies above the audio cutoff frequency. Thus, when a pair is used to support applications that require higher frequencies, such as carrier systems, loading coils must be absent.
This article is licensed under the GNU Free Documentation License at http://www.gnu.org/copyleft/fdl.html You may copy and modify it as long as the entire work (including additions) remains under this license.
You must provide a link to http://www.gnu.org/copyleft/fdl.html for use of this content.
To view or edit this article at Wikipedia go to http://www.wikipedia.org/wiki/Loading_coil |
|
|
|
©
2005 Music
Entertainment Network. A Cyprus
Roussos Music Entertainment Company. All Rights Reserved.
Articles
from
Wikipedia
Encyclopedia
are licensed under the GNU Free Documentation License. You may copy and
modify it as long as the entire work (including additions) remains under
this license. You must provide a link to http://www.gnu.org/copyleft/fdl.html.
All text is available under the terms of the GNU Free Documentation License.
All trademarks and service marks including Napster,
Rio
MP3 Player, iRock,
Creative
MP3 Player, iRiver,
Apple iPod
Portable
MP3 Players + iTunes,
eMusic,
Guitar
Center Musicians
Friend, Zzounds
Musical Instrument Equipment Store, BMG
Music Service, Columbia
House DVD Club, eBay,
Amazon,
Netflix,
Jamster,
Gamefly,
Friendster,
Music123
Musical Instruments, Billboard,
MTV,
Yahoo
Launch, Overture
Yahoo Search Marketing, MusicMatch,
Kazaa,
Kazaa
Lite, Morpheus
software, Real
Rhapsody, Bose,
Sheet
Music Plus, Billboard
Magazine, Rolling
Stone Magazine, Walmart
Downloads, Barnes
and Noble book store, CDUniverse,
Tower
Records, MSN
Music, MySpace,
Limewire,
WinMX,
Google
Adsense, Alibris,
TicketsNow,
MusicSpace,
uBid
are property of their respective owners. Music.us has no affiliation with
MySpace
or Friendster,
but offers alternative services. Disclaimer: Uploading or downloading
of copyrighted works without permission or authorization of copyright
holders may be illegal and subject to civil or criminal liability and
penalties. Please buy
music and refrain from any illegal downloading activity. User
submitted free content, including Wikipedia encyclopedia or modification
thereof by end users, do not reflect the views and opinions of Music.us
and are for educational and research development purposes. Our website
offers advanced search for bands and artists bio and albums and browse
options for artist band biographies resources and information. We offer
blogs and community building tools for authors, bands and users. The Music.us
Entertainment Network is web's most comprehensive one-stop shopping, community
networking and education site. Find song lyrics, guitar tablature, posters,
ring tones, free MP3 downloads and hourly updating news feeds on musicians
and any genre style including rock,
pop,
hip
hop, country,
christian,
rap,
classical,
folk,
dance,
latin,
R
and B, blues,
punk,
heavy
metal, alternative,
guitar,
bass,
drums,
gospel,
wedding,
arabic,
jazz,
soundtrack,
world,
reggae,
soul
and more. Privacy Policy
- Site Map
- MP3 - Music Downloads
- Song Lyrics
|