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   Shields, Coil

Electromagnetic shielding is the process of limiting the flow of electromagnetic fields between two locations, by separating them with a barrier made of conductive material. Typically it is applied to enclosures, separating electrical devices from the 'outside world', and to cables, separating wires from the environment the cable runs through. Electromagnetic shielding used to block radiofrequency electromagnetic radiation is also known as RF shielding.

The shielding can reduce the coupling of radio waves, visible light, electromagnetic fields and electrostatic fields, though not static magnetic fields. (A conductive enclosure used to block electrostatic fields is also known as a Faraday cage.) The amount of reduction depends very much upon the material used, its thickness, and the frequency of the fields of interest.



Bronze Partners
3M Corrosion Protection Products
Ad-Vance Magnetics, Inc.
Allied Components International
Amuneal Manufacturing Corp.
Atlee Inc.
Eagle Magnetic Company, Inc.
Kyocera America, Inc.
Laird Technologies
Lodestone Pacific
Magnetic Radiation Laboratories
Magnetic Shield Corp.
Mingstar Electronic Corp.
MMG
Precision Electronics
Rapid Conn Inc
Tapecon, Inc.
Tapecon, Inc.
Tecknit Inc.
The MuShield Company Inc.
West Coast Magnetics
Fix & Prog. Sinewave Oscillators - Frequency Devices

 

Books
Electromagnetic Analysis and Design in Magnetic Resonance Imaging
Jianming Jin

Excerpt - page 108: "... of the field produced by the eddy current in the shield will be the same as that of the gradient coil and one needs to consider only the spatial variation of ..."
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Hand-list of the Specimens of Shield Reptiles in the British Museum
John Edward Gray

The New Way Things Work
David Macaulay and David Macaulay

Excerpt - page 173: "... LITHIUM BLANKET HOT GASES HEAT EXCHANGER HELIUM EXHAUST MAGNETIC FIELD COILS SHIELD ,OIAR FUSION everal forms of power make use of 1e ..."
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Zero: The Biography of a Dangerous Idea
Charles Seife

Excerpt - page 14: "... of the atoms that make up a tweezer, a refrigerator coil, and a tub of liquid ... cool it down. You cannot shield the banana from the box or the tweezer or the ..."
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The Clock Repairer's Handbook
Laurie Penman

Excerpt - page 144: "... particularly if the inner anchor hole is being replaced. The coils can he protected from unwanted tempering by inserting it thin strip of brass so that it shields the coils and radiates heat. When the steel has cooled ..."
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TV Repair for Beginners
Homer L. Davidson

Excerpt - page 203: "... and parts layout will help you to identify the correct coil. (Do not attempt to adjust ... (Fig. 7-16). Usually, the tallest shield coil is the interstage, and the short one is the ..."
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Constellations (Star Trek)
Marco Palmieri

Excerpt - page 142: "... 142 Stuart Moore me precise coil emissions and shield strengths on its two nacelles." Chekov looked up. "Sir?" "Now" ..."
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Sunrise on the Mediterranean
Suzanne Frank

Excerpt - page 540: "... must have been dazzled, they were disciplined. They took the shields from the wall, the coils and cables off the floor. RaErn gestured and they left, ..."
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Corvette, 1966-1982: Shop Manual (Motorbooks Workshop)
Motorbooks International

Excerpt - page 40: "... and tighten securely. Install fuel line and tighten connector. CHOKE COIL Replacement Remove air cleaner and disconnect choke rod upper clip. Remove the choke coil shield by prying with a screw driver in the cut out ..."
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Diary of an Amazon Jungle Guide: Amazing Encounters with Tropical Nature and Culture
Paul Beaver

Excerpt - page 160: "... much closer to the forest than from behind the plastic shield of a tent. There were mosquitoes near the water so I lit some mosquito coils that Kevin had supplied and placed them around the perimeter ..."
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Design and Development of Medical Electronic Instrumentation: A Practical Perspective of the Design, Construction, and Test of Medical Devices
David Prutchi and Michael Norris

Excerpt - page 160: "... remove one of the Coax Plastic Tube Epoxy Glob E-Field Shield ~ 0 3 Ferrite "U" ... an F-field shield for the coil. The assembly is mounted at the end of it small ..."
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Greenberg's Repair and Operating Manual for Lionel Trains, 1945-1969 (Greenberg's Repair and Operating Manuals)
Roger Carp

Excerpt - page 260: "... Lumber Car, first made in 1948, is CONTACT STRIP PLUNGER COIL INSULATOR similar to the earlier ... PLATFORM COIL COVER 3651-12 COIL SHIELD 51.6 CLAMP 36 5 1. 6 3451.21 PLUNGER 6 PIN ..."
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MRI from Picture to Proton
Donald W. McRobbie, Elizabeth A. Moore, Martin J. Graves, and Martin R. Prince

Excerpt - page 172: "... A better approach is to use active shielding where additional coils surround the gradient coils and are driven with the opposite gradient waveform. This cancels the gradient field outside the shield coils, magnetically isolating the gradients from the cryostat so that ..."
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Magnetic Resonance Imaging: Physical Principles and Applications (Electromagnetism)
Vadim Kuperman

Excerpt - page 156: "... approach entails the use of the so-called actiuely shielded gradient coils with minimum fringe field [11]. ... gradient field, and an outer (shield) coil, which is designed to cancel the fringe field created ..."
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Antenna Theory: Analysis and Design, 3rd Edition
Constantine A. Balanis

Excerpt - page 218: "... LINEAR WIRE ANTENNAS REFERENCES 1. W. A. Wheeler, "The Spherical Coil as an Inductor, Shield, or Antenna," Proc. IRE, Vol. 46, pp. 1595-1602, September 1958 ..."
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Star Trek: Starfleet Survival Guide
David Mack

Excerpt - page 150: "... geometry as a template. This will enable the warp field coils to emit the subspace field in a geometry close to its final form, minimizing the amount of energy required by the shield emitters to shape and stabilize the metaphasic shield. itiate ..."
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The Fields of Electronics: Understanding Electronics Using Basic Physics
Ralph Morrison

Excerpt - page 117: "... that surrounds each turn does not couple to the secondary coil. Also, there is always some ... and avoid the use of shields. The coils both have capacitances to the core, but when ..."
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The Best of Amt Magazine: Airframe Technology/Accessory Technology (Best of Amt Magazine)
Amt Magazine

Excerpt - page 200: "... probes are common to overcome a variety of obstacles. Probe coils are also used where high resolution is required because of the ability to shield the coil. A desirable trait for probe coils is to ..."
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The Complete Idiot's Guide to Being Psychic
LaVonne Carlson-Finnerty

Excerpt - page 299: "... by several layers of various metals and a supercooled electrical coil to shield against magnetic influences. Interestingly, Swann's own early experiences with creating ..."
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Grounding and Shielding Techniques
Ralph Morrison

Excerpt - page 84: "... mV and 1 mV of noise is impacting. 5.7 THE THREE-SHIELD SOLUTION The three-shield solution to ... interference currents that flow in coil-to-shield capacitances do not enter the signal conductors. The interference current ..."
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Prinicples of Environmental Engineering and Science
Mackenzie L Davis, Susan J Masten, Mackenzie Davis, and Susan Masten

Excerpt - page 378: "... Plan view Flushing valve PVC lateral with Filter fabric orifice shields Air coil system` Valve box 3cm 3.8-mm PVC liner To drainfield or ..."
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Guitar Rigs: Classic Guitar and Amp Combinations
Dave Hunter

Excerpt - page 61: "... sides and another unseen on the bottom, intended to help shield the single-coil units from hum. Like the Jazzmaster, the Jaguar carried switching ..."
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Building Electro-Optical Systems: Making It All Work
Philip C. D. Hobbs

Excerpt - page 570: "... Watching for Inductive Coupling The main drawback of large air-core coils is that they tend to ... enough, use shielded coils or shield the air-core coils from each other with copper-clad board. ..."
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Mri: Basic Principles and Applications
Mark A. Brown and Richard C. Semelka

Excerpt - page 168: "... hardware or software. A second approach uses a second gradient coil surrounding the main gradient coil ... opposing current flow through the shield coil reduces the eddy currents induced outside the coil. Typical ..."
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Complete Wireless Design
Cotter W. Sayre

Excerpt - page 302: "... matching inductors in a SAW filter circuit, use either shielded coils, or place a shield between the input and output of the SAW (called a ..."
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Reading American Photographs: Images As History, Mathew Brady to Walker Evans
Alan Trachtenberg

Excerpt - page 40: "... self-image. Brady's new quarters followed the rules exactly. "Our mortal coil incloses and shields something of infinitely greater worth and beauty than itself," explained ..."
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The Complete Corvette Restoration and Technical Guide, Vol. 2: 1963 Through 1967
Noland Adams

Excerpt - page 175: "... = HOLE N'~CD 1960: CAPACITOR ASSEME EXISTING SCREW' POSITIVE POST COIL IGNITION ,--SHIELD SUPPORT 2 I I EXISTING CONNECTOR (BLACK WIRE) L ..."
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Tool and Manufacturing Engineers Handbook (Vol 4: Quality Control and Assembly)
Tom Drozda, Charles Wick, John T. Benedict, and Raymond F. Veilleux

Excerpt - page 83: "... displacement of a separate movable core. It consists of three coils equally spaced on a cylindrical ... adjustment Cable Magnetic Magnetic Magnetic shield shield Coil Coil shield Core II Reversing Coil Coil Core ..."
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Functional Magnetic Resonance Imaging: An Introduction to Methods
Peter Jezzard, Paul M. Matthews, and Stephen M. Smith

Excerpt - page 91: "... pipes and is potted for rigidity. Generally, whole body gradient coil assemblies include an active shield coil, as shown in Fig. 5.6, in order to confine ..."
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Handbook of Jig and Fixture Design
William E. Boyes

Excerpt - page 1053: "... 41 Coil II"I,I Core I1R Coil (a) Cable Cabl( Magnetic shield Coil Core I  Coil III Non magnetic rod Reed ..."
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NMR Imaging in Chemical Engineering
S. Stapf and Song-I Han

Excerpt - page 53: "... stray field in actively shielded magnets, by a second outer coil. The pre-emphasis only has to ... Depending on the geometry the shield coil will reduce the effective gradient inside, so another compromise ..."
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Sandi Genovese's Three-Dimensional Scrapbooks: Techniques for Building Texture and Style into Your Pages
Sandi Genovese

Excerpt - page 13: "... z Tight circle/ peg Ob ' Loose circle/ Cb closed coil >> Teardrop <~ Marquise/eye "I MN Shaped Square Heart/rolled (1 heart/shield ~~ Loose coil ~~ scroll ( Scroll heart T V ..."
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Sing a Battle Song: The Revolutionary Poetry, Statements, and Communiques of the Weather Underground 1970 - 1974
Bernardine Dohrn, Bill Ayres, and Jeff Jones

Excerpt - page 95: "... planning from the rich they should be planting seeds not coils and shields. The poor will inherit the right to their fertile land. ..."
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Automotive Electromagnetic Compatibility (EMC)
Terence Rybak and Mark Steffka

Excerpt - page 74: "... 74 /Automotive EMC Figure4.45. Spark Plug Wire With Shield Coil Resistor Figure4.46. Equivalent Electrical Model However, there are several key ..."
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Packard: A History of the Motor Car and the Company
Beverly Kimes

Excerpt - page 78: "... was built over the front end of the car to shield the radiator coils. The start was made by Harold W. Larzalere, Packard's Pacific ..."
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Corvette Buyers Guide, 1953-1967 (Buyer's Guide)
Richard Prince

Excerpt - page 28: "... "086" and "12-V" embossed in its case. The radio interference shield is chrome plated. Both the correct coil and its shield are frequently missing and very difficult to ..."
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