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	Toroid - Wikipedia, the free encyclopedia
		A toroid is a doughnut-shaped object whose surface is a torus.
		Toroidal coils reduce resistance, due to the larger diameter and smaller number of turns in the winding.
		The magnetic flux in a toroid is confined to the core, preventing its energy from being absorbed by nearby objects.
	en.wikipedia.org /wiki/Toroid (220 words)

	toroid - a Whatis.com definition
		A toroid is a coil of insulated or enameled wire wound on a donut-shaped form made of powdered iron.
		A toroid is used as an inductor in electronic circuits, especially at low frequencies where comparatively large inductances are necessary.
		Toroidal coils of a given inductance can carry more current than solenoidal coils of similar size, because larger-diameter wires can be used, and the total amount of wire is less, reducing the resistance.
	whatis.techtarget.com /gDefinition/0,294236,sid44_gci214066,00.html (233 words)

	THE TOROID DEVICES
		In the toroid device, a new method of supporting the gasket material surrounding the sample and the central portion of the anvils is used, with the object of reducing the anvil deformation and gasket extrusion.
		Toroid is an anvil type device consisting of two parts of relatively small size and weight which can be installed in any hydraulic press.
		To illustrate the experimental possibilities of the toroid device, we consider briefly the design of liquid-filled ampoule for high temperature measurements of magnetic susceptibility and the strain gauge technique for studies of the equation of state at room temperature.
	www.hppi.troitsk.ru /products/Toroid2/Toroid1.htm (2209 words)

	MEC: Why are Toroid Transformers Better?
		As long as the core cross section is held constant, the height and diameter for the toroidal may be economically varied to accommodate equipment design requirements - a great help when designing low profile, slim line equipment.
		Toroidals have no air gaps: primaries and secondaries are wound uniformly around the entire core.
		the core of a toroidal s formed from a single strip of grain-oriented electrical grade silicon steel tightly wound in the form of a clock spring with the ends spot-welded i place.
	www.yesmec.com /faq/toroids.html (305 words)

	ToroidalSpace
		A pure, coherent harmonic source is fed through the "portacle" - the modulating filter generated from the individual's voicing - and focused to a 0-dimensional point at the vortex thread (or "origin") of the flowing torus.
		The torus, however, is not the most practical format for presentation, as the partials populating the interior or back-facing surfaces would be obscured from view.
		Unfolding the native toroidal space and projecting it into a 2-dimensional matrix allows us to see every partial in a uniform grid.
	harmonicresolution.com /ToroidalSpace.htm (182 words)

	Toroids
		These toroids are said to be wound with a certain "sense" (reference of one winding to another) that must be maintained for the circuit to perform properly.
		In this picture L18 is a toroid using a single wire (it has 2 leads), T5 is a transformer wound with two separate pieces of wire (it has 4 leads) and T3 is a bi-filar (two wires twisted together) transformer (it has 4 leads).
		Place the leads from the ohmmeter on the solder pads (not the bare leads) of two of the leads from the same winding of the toroid or that are electrically connected in the circuit.
	ww2.netnitco.net /users/wt9w/Toroids.html (2256 words)

	Toroid Company Profile
		Toroid Corporation of Maryland (TCM) is a privately held corporation, founded in 1982.
		Prior to immigrating from Sweden in 1982, Gunnar Ennerfelt had founded Toroid Transformator AB (TTAB) in Vaxjo, Sweden in 1978, preceded by five years as the president of Transductor AB, a company that pioneered the development of labor saving manufacturing methods of power toroids in the late sixties.
		Toroidal DC filter chokes for 60Hz were introduced to offer a better solution to using large filter capacitors for applications with high voltage requirements.
	www.toroid.com /transformer_manufacturer/profile.htm (347 words)

	The Toroid Equivalent Circuit (Site not responding. Last check: 2007-11-01)
		RT is a 50 Ohm terminator, & ctloop is the measured capacitance between the test loop and ground (18pF -- the toroid response really isn't affected by this, but it was put in anyway).
		The values of ltor and ctor were determined by fitting a response function to the measured frequency response of each toroid.
		In the real spice circuit, the toroid circuit was attached to the integrator by removing RT2 and VL2, and attaching node #8 to node #61 of the integrator.
	zebu.uoregon.edu /~dmason/fnal/spice/circ2.html (155 words)

	Toroid Terror - FIRSTwiki (Site not responding. Last check: 2007-11-01)
		Toroid Terror was the name of the 1997 season FIRST game.
		Toroid Terror was the first time that a FIRST game departed from balls.
		This had the disadvantage that robots couldn't fit through a standard doorway, and there were rumors of robots being assembled in a room, and when they tried to take it out to ship, it wouldn't fit through a door.
	www.firstwiki.org /Toroid_Terror (410 words)

	CUI Inc \| Press Room \| New Low Cost Toroid Transformers from CUI
		Toroids represent a significant advantage over EI type transformers in size, shape, and function.
		Primarily, the length of the winding is shorter than an identical EI type transformer because the copper wire is spread over the entire core.
		Toroids are the most recent addition to CUI’s new line of transformers, which include R-Core and laminated types.
	www.cui.com /toroid_pr.asp (194 words)

	AMVECO, INC: Temperature Rise Considerations, Voltage Drop & Toroid Efficiency
		Total losses for the transformer, including winding loss and core loss per pound of silicon steel at a given flux level, may be calculated from design data and data furnished by steel suppliers.
		At AMVECO, cross-sections of toroids are ordinarily designed to render a 60ºC to 65ºC rise.
		Regulation may be improved by using large diameter wire in the windings or a larger core.
	www.amveco.com /Technical_Notes_2.htm (163 words)

	Toroid (Site not responding. Last check: 2007-11-01)
		The toroid serves three purposes when used as the top terminal on a Tesla coil.
		As mentioned in the theory section, it forms a capacitor with respect to ground and thus helps to determine the frequency at which the secondary oscillates.
		Lastly, the large radius of curvature inherent to the toroid shape helps to prevent arc breakout until the secondary potential has risen very high.
	users.tm.net /lapointe/Toroid.htm (267 words)

	Colliding Plasma Toroid Clean-Energy Breakthrough
		This is possible because of the self-organized nature of the plasma toroids which minimizes the plasma forces.
		“The D version plasma toroid is a spheromak, the B version plasma toroid is a spheromak, and the P version plasma toroid is a spheromak, the difference being the kind of ions each has.
		He defines the “spheromak” as the plasma toroid configuration itself since there is no single way to produce them and hence no “spheromak generator,” unlike a tokomak for example.
	pesn.com /2006/03/08/9600242_Spheromak_Plasma_Toroid (5592 words)

	diyAudio Forums - toroid for car amp smps
		Leakage inductance with ferrite toroid transformers is about the same obtained with EI or EE standard cores, provided the same core materials and sandwitching winding techniques are used, but it's almost imposible to get perfect sandwitching in a toroidal core so coupling tends to be worse
		A toroid can be good for containing magnetic fields and this is important in the certain applications, such as a 50/60Hz power transformer for an audio amp.
		Toroid cores work best when the number of primary and secondary turns is the same or a close multiple of each other, such as 2, 3, or 4 to 1.
	www.diyaudio.com /forums/showthread.php?postid=349565 (1514 words)

	Toroid Technology Ltd (Site not responding. Last check: 2007-11-01)
		TOROID TECHNOLOGY was established in 1976 to provide a design and manufacturing facility to OEM companies using Toroidal Wound Components.
		We are the UK's leading company specialising in the design and manufacture of toroidal wound components for the electronic, telecommunication, audio and computer industries.
		Toroid Technology offers a range of in-house design solutions specifically configured to help you fulfill any new requirement in our field of interest
	www.toroid-tech.com /index.htm (89 words)

	Ness Engineering Tech Data - Toroid (Site not responding. Last check: 2007-11-01)
		Toroidal inductors are often used in pulsed power and power conditioning applications since the magnetic fields are largely confined within the volume of the form.
		Another formula for the inductance of a circular cross section toroid is shown below:
		A second formula for a rectangular form toroid is shown below:
	home.san.rr.com /nessengr/techdata/toroid/toroid.html (234 words)

	Toroidal Transformers for power supplies and isolation in medical, instrument, audio and control panel transformer ...
		Toroidal Transformers for power supplies and isolation in medical, instrument, audio and control panel transformer applications.
		Engineers in a broad range of industries have discovered the performance advantages of our toroidal power transformers.
		With their very low magnetic strayfield emission levels, quiet operation, low weight, small size, high efficiency, and easy assembly, our toroidal power transformers will deliver the superior performance capabilities you require.
	www.toroid.com (156 words)

	Dapra : Toroid Cutters & Inserts : Metric Series
		Toroid Home : Cutter Bodies : Inserts : Spare Parts : Metric Series : Reference
		Dapra Corporation is now offering a series of high-performance METRIC SERIES Toroid Cutters and Inserts in the most commonly used sizes and styles.
		Unbeatable performance and wear resistance in high-heat applications such as harder steels, tough stainless steels and high-temperature alloys.
	www.dapra.com /cutting/toroid/metric.htm (341 words)

	TOROID by B and E Engineering
		Toroid is the most complete iron powder core program on the market today.
		It was designed by microwave engineers to provide filter, radio,microwave and Ham radio engineers with all relevant information of an inductor and core at his or her finger tips.
		Toroid is a iron powder toroidal core tool box which is designed for DC to microwave frequencies with an emphasis on the higher 1 to 200 MHz ranges.
	members.aol.com /Toroids/johnindx.htm (400 words)

	[No title]
		The clearance between the outer boundary of the dipole iron and the inner boundary of the toroid iron is ~ 1 cm.
		The BH used was the same that was applied to the most recent Minos toroid studies, and is based on measurements of Minos toroid steel.
		Because the hole in the center of the toroid iron is not square, there is about 4% more steel available for flux at theta = 0, which accounts for the consistently lower field along that line when the dipole is not present.
	home.fnal.gov /~howell/toroid_and_dipole_interaction.doc (1723 words)

	Toroid Inductors provide noise suppression., J.W. Miller Magnetics (Site not responding. Last check: 2007-11-01)
		GARDENA, Calif. - March 31, 2004 - J.W. Miller Magnetics' 2300 Series of High Current Toroid Inductors are designed for high performance noise suppression in a variety of applications.
		The 2300 Series features a cost-effective, iron powder core that reduces the effect of coupling and virtually eliminates undesirable conductive emissions, making it an ideal choice for high-current applications.
		Oct 8, 2004 - Toroidal Inductors suit power applications.
	news.thomasnet.com /fullstory/450474 (569 words)

	Page 2 - High Density Plasma Toroid Fusion - Dev Hardware
		High Density Plasma Toroid Fusion Science forum discussing scientific research and developments in artificial intelligence, astronomy, cybernetics, physics, paleontology, alternative energy sources, and supercomputers.
		Their theoretic papers support that the colliding toroids will reach the temperatures and pressures for fusion.
		I can buy that the toroid is pretty stable in a static setting, but when you are shooting this thing at speed, I would think that collisions with atmosphere would lead to instability in fairly short order, is all I'm saying.
	www.devhardware.com /forums/science-69/high-density-plasma-toroid-fusion-30062-2.html (2866 words)

	Dapra : Toroid Cutters and Inserts for Light Roughing and Semifinishing
		Maximize the versatility of your Toroid with square inserts.
		Toroid Inserts : Button Inserts, High-Feed Inserts, Square Inserts
		Dapra Toroid products are made in the USA.
	www.dapra.com /cutting/toroid/index.html (200 words)

	Formation of a Giant Toroid from Long Duplex DNA (Site not responding. Last check: 2007-11-01)
		It is well-known that polyamines, such as spermidine, have the effect of condensing DNA molecules into a toroidal morphology with an outer diameter of 80-100 nm.
		We have investigated the collapse of long duplex T4 DNA induced by spermidine with use of fluorescence and electron microscopy.
		We found that giant toroids with an outer diameter of ~200 nm are generated from single T4 DNA under a high concentration of spermidine in the buffer solutions with rather high salt.
	pubs.acs.org /cgi-bin/abstract.cgi/langd5/1999/15/i12/abs/la981159g.html (159 words)

	Ferrite Toroid Cores From MAGNETICS®
		Ferrite toroids offer high magnetic efficiency as there is no air gap and the cross-sectional area is uniform.
		MAGNETICS® toroids are available in many sizes (O.D.'s from 2 mm to 140 mm) and materials (permeabilities from 2,300 to 15,000).
		If you require a size that is not listed, e-mail a MAGNETICS Application Engineer.
	www.mag-inc.com /ferrites/ferrite_toroids.asp (233 words)

	Toroid Transformers (Site not responding. Last check: 2007-11-01)
		Take a few moments to compare the toroidal power transformers you’re using right now against
		We could tell you how good we are – but we’d rather you prove it to yourself.
		At ToriodTech, our prime commitment is to our clients in providing them the finest toroidal power transformers and service.
	www.toroidtech.com (185 words)

	High Density Plasma Toroid Fusion - Dev Hardware
		The issue seems to be Dr. Chen's paper and whether his assumptions of the aspect ratio for the plasma toroids, match the model of Clint Seward proposed device.
		Well's data shows clearly that two toroids will indeed "stick together." Read his paper that I have referenced in our documents.
		In addition, we have calculations, not yet published, that demonstrate that two toroids will adhere together, will persist for several seconds, and will pass break even.
	www.devhardware.com /forums/science-69/high-density-plasma-toroid-fusion-30062.html (4084 words)

	Compact Toroid Injection Experiment (CTIX) Home Page (Site not responding. Last check: 2007-11-01)
		The principal investigator of this research program is Professor David Hwang.
		The acceleration of compact toroidal plasmas is a synthesis of two well-developed concepts: the spheromak plasma configuration and the railgun accelerator.
		The spheromak compact toroid is a structure of plasma containing embedded toroidal and poloidal magnetic fields … more
	ctix.das.ucdavis.edu (129 words)

	Toroid, and Toroidal Transformers by V&F Transformer (Site not responding. Last check: 2007-11-01)
		Electrostatic Shielding: a thermal fuse or a thermal circuit breaker can be added to protect circuitry meets European and some UL over-voltage and overload protection tests and requirements
		Magnetic shielding: To attenuate stray magnetic fields, a silicon steel belly band can be added to toroid
		Terminated leads: Terminals and housings can be added to the leads to facilitate easy connection of the toroid to your equipment
	www.vf-transformer.com /toroid.html (131 words)

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