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Topic: Multiple coil magnet

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	Coil - Wikipedia, the free encyclopedia
		A degaussing coil is used in the process of removing permanent magnetism (magnetic hysteresis) from an object.
		A relay coil is the copper winding part of a relay that produces a magnetic field that actuates the mechanism.
		The RNA coil is a nucleic acid structure consisting of a string of covalently-bound nucleotides.
	en.wikipedia.org /wiki/Coil (791 words)

	Glossary of Magnet Terms (Site not responding. Last check: 2007-11-03)
		A piece of soft iron that is placed on or between the poles of a magnet, decreasing the reluctance of the air gap and thereby reducing the flux leakage from the magnet.
		That portion of the magnetic flux that is lost through leakage in the magnetic circuit due to saturation or air-gaps, and is therefore unable to be used.
		A coil conductor, usually of known area and number of turns that is used with a fluxmeter to measure the change of flux linkage with the coil.
	www.imsolution.com.au /glossary.html (2800 words)

	Multiple coil magnet - Wikipedia, the free encyclopedia
		The multiple-coil magnet was invented by Joseph Henry in 1831.
		It is an electromagnet that has several coils of wire connected in parallel.
		This increases the total electric current in the electromagnet and therefore generates a stronger magnetic field.
	en.wikipedia.org /wiki/Multiple_coil_magnet (87 words)

	Flat coil linear actuator for multiple transducer arms - Patent 4331990
		The combination as recited in claim 13, wherein the magnet means additionally comprises a first linear array of high performance pole pairs arranged along a primary segment of said path and a second linear array of inexpensive moderate-performance pole pairs arranged along a secondary segment of the path, adjacent the primary segment.
		That is, the magnetic heads are carried by a sliding carriage driven by a VC electric motor including a mobile electric coil positioned in a magnetic field and fed by a current of variable intensity and polarity.
		Coils C-1, C-2 are identical and shown in schematic operative relation with a linear array of opposed permanent magnet pole pairs of the indicated polarity (see arrows).
	www.freepatentsonline.com /4331990.html (6544 words)

	Tesla coil (Site not responding. Last check: 2007-11-03)
		The coil achieves a great gain in voltage by means of a resonant circuit, unlike a conventional transformer whose gain is limited to the ratio of the numbers of turns in the windings.
		Tesla coils' outer conducting surfaces, which are charged to a high potential, have large radii of curvature to minimise leakage of the oscillating charges through corona discharges or sparks.
		Later coils consist of a primary tank circuit, which is a series LC circuit composed of a high voltage capacitor, spark gap, and primary coil; and the secondary LC circuit, a series resonant circuit consisting of the secondary coil and the toroid.
	www.worldhistory.com /wiki/T/Tesla-coil.htm (3264 words)

	What Is A Coil Magnet - Super Magnet Guide
		The armature is operated by a hermetically sealed coil magnet in a steel housing...
		Initial pull-in of the armature to the coil magnet is followed by a...
		A multiple coil magnet is an electromagnet that has several coils of wire...
	www.supermagnetguide.com /what-is-a-coil-magnet.html (496 words)

	Vintage single coil pickups
		Alnico magnets are necessarily made of a mix of various metals (an alloy) in various ratios that determine the resulting magnetic properties such as magnetic strength.
		Because these magnets must be buffered by a steel collector they do not influence the induction properties of a string sensing coil, but the steel does much to the detriment to the sound.
		The configuration of magnet lengths arranged to approximately coincide with the arc of the strings that is reflecting the radius of the fretboard for the purpose of achieving balanced outputs from the various strings.
	www.kinman.com /html/toneWorkshop/glossary/technical.htm (3811 words)

	Experimental Tesla Coil
		Suppose we make a Tesla coil secondary that is exactly one wavelength long, then suppose we wind it around a toroid instead of a cylinder, and when we are finished winding our coil we connect the ends of the wires and solder them (making one really large closed loop).
		L2 is based on 1/4th the total number of turns in the entire coil for the full wave configuration and 1/8th the total number for a two wave configuration and 1/12th for a three wave.
		Roughly about 1/2 of Medhurst’s coil capacitance must be subtracted from C2 and the value of C2 is split between the voltage nodes (treat section as solenoid for this approximation, use inside radius for solenoid height).
	people.emich.edu /jdwarshui/experimental.html (1371 words)

	Magnet Charger Page
		To Charge: The magnet is placed on the top of the cores, north pole of the magnet to be charged being placed on the south pole of the core of electromagnet and south pole of magnet, on north pole of electromagnet.
		Magnets Made of Steel: The magnets used on both low and high tension machines are of special tungsten steel made as hard as it is possible to obtain them, so hard that a sharp file cannot make any impression on the metal.
		It resides only on the surface of the steel, and it is found that a much stronger magnet is obtained, weight for weight, by making it in sections, one placed over the other, than by using a massive single magnet.
	www.oldengine.org /members/rotigel/Magnet (997 words)

	Multiple Unit Operation (Site not responding. Last check: 2007-11-03)
		Multiple unit trains, as these trains became known, were equipped with control cables called train lines, which connected the driver's controls with the motor controls and power switches on each motor car.
		The relay is activated by a magnetic core which is energised when a controlling switch is closed.
		The contactor is latched closed when its "set" coil is energised or opened by the "trip" coil to unlatch it when required to switch off the lighting.
	www.railway-technical.com /muops.html (1552 words)

	Telsa Coil
		A overall view of the coil setup and its various, uhm, "support systems".
		A closeup of the primary coil, which consists of about 16 turns of 1/4" copper pipe.
		Tesla coils are bright and LOUD and cause interference all over the place.
	www.geocities.com /transactoid/tesla.html (248 words)

	MAGNET THERAPY
		In addition, very short bursts of a strong magnetic field are used to treat infected lymph glands, tumours and other parts of the body that may contain pockets of pathogenic microbes or cancer cells.
		This may not be very noticeable with strong magnets or magnetic pulses as both sides may suppress nerve signals of pain and improve general health by recharging damaged electric cell potentials.
		In the scientific definition the north pole of a magnet is the north-pointing pole.
	www.health-science-spirit.com /electromag.html (3409 words)

	Tesla Coil Notes Page (Site not responding. Last check: 2007-11-03)
		Since the primary ended behind the coil from our perspective, the arcing wasn't detected right away, and much damage was done before discovery.
		After winding the coil, I attempted to seal it with a layer of polyurethane as always.
		A load is attached and the coil is retuned until max ouput is achieved.
	www.stargazing.net /astroman/TCNotes.html (3871 words)

	Lakhovsky's Multiple Wave Oscillator
		The copper coil acted as an antennae or a tuning coil, collecting and concentrating oscillation energy from extremely high frequency cosmic rays.
		These simple coils, worn continuously around certain parts of the body, would invigorate the the strength of the human cells and increased the immune response which in turn took care of the offending pathogens.
		To achieve the Lakhovsky effect, it's important that the coil (or bracelet) is "open" and made of copper.
	www.altered-states.co.nz /lmwo/lmwo.htm (2938 words)

	Infolytica » Gallery » MagNet
		Magnetic losses (also known as iron losses or core losses) are an area of growing interest in fields such as advanced electric machines and transformers.
		MagNet's 3D Transient solver correctly models induced eddy currents inside the aluminum plate, after the current in the coil is turned off.
		The motor is made of a stator with eccentric pole faces and a rotor made of samarium cobalt permanent magnet (magnetized in a fixed direction) that rotates in steps of 180 degrees.
	www.infolytica.com /en/coolstuff/index-MN6.html (4358 words)

	My First Tesla Coil
		Secondary coil is coated with a few coats of polyurethane.
		I figured that the coil would probably perform better with a much larger top load, but the primary coil was to small.
		With this new coil we could put a big 6" diameter 22" wide aluminum ducting toroid on it or the even bigger 8" x 21" stovepipe toroid on it.
	members.tripod.com /extreme_skier/quantum1 (1038 words)

	Middle East Open Encyclopedia: Coil (Site not responding. Last check: 2007-11-03)
		This is an extract from The Middle East Open Encyclopedia, made possible through the Wikimedia Foundation.
		A Oudin coil is a disruptive discharge coil.
		Iraq Museum International always displays the most recent published revision of the source article, Coil; all previous versions may be viewed here.
	www.baghdadmuseum.org /ref/index.php?title=Coil (921 words)

	Magnet Wire (Site not responding. Last check: 2007-11-03)
		Femco Magnet Wire is a joint venture company that has been supplying round insulated copper magnet (winding) wire to the transplant market since...
		Permanent magnets are a long term investment with good dollar value in workplace...
		Copper magnet wire is used to wind CCL coils...
	www.mpja.com /mpjaindex/Magnet-Wire.html (607 words)

	Oscar Controls -Degauss Coil (Site not responding. Last check: 2007-11-03)
		The degaussing coil is made into a smaller coil because I am going to add a light bulb to the circuit to limit the current.
		Because I am going to limit the current through the coil, by folding the coil in half we are increasing the strength of the EMF by essentially doubling the amount of turns on the coil.
		With the bulb this close to the coil, it will create a glare on the monitor and I like to watch the colors move on the screen when I wave the coil in front of the tube.
	www.oscarcontrols.com /degauss/index.shtml (670 words)

	John's Tesla Coil Page
		In previous coiling attempts, I had a very high failure rate of transformers.
		Tesla coils are fun toys but you must fear their power.
		Actually, you can hear when the coil is in tune, making sound an important part of the dial in process.
	www.alpinecom.net /johnsteslas (509 words)

	Tesla_coil_sparks
		The 8 foot (96 inch) spark is exactly 3 times as long as the 32 inch secondary coil that generates it.
		This 10 second exposure demonstrates the shaping of the high electromagnetic fields around the main coil that directs away them from the axis of the coil.
		This is potentially dangerous and should not be attempted on a large coil regardless of power input.
	members.iinet.net.au /~pterren/tesla_coil_sparks.htm (699 words)

	Tesla Coil Stuff
		Tesla Coils are one of the most spectacular inventions of Nikola Tesla.
		This coil is being created for a simple purpose: to astound my friends, and to have an awesome science project.
		This secondary coil is the main source of my coiling flaws.
	www.geocities.com /SiliconValley/Peaks/4542/tesla.html (966 words)

	Breast Coil and MRI (Site not responding. Last check: 2007-11-03)
		The recent introduction of the surface breast coil means MRI has become an important tool in breast cancer diagnosis, needle localization, and biopsy.
		With the breast coil, patients lie face down on the MRI table with their breasts snugly in the padded circular device.
		Mammography and ultrasound are used in conjunction with MRI to increase accuracy.
	www.clinicalradiologists.com /content/index.cfm/ContentID/1298/SectionID/373 (275 words)

	PSN-L Message - Subject: Calendar magnet anyone? (Site not responding. Last check: 2007-11-03)
		Hi all, This might be an ideal value magnet for those seeking a strong magnet/s and very cheap unit/s for their seismos.
		My only other test was with a 9.88K coil using the same adjustabe vise, and it delivered a max of ~9 volts.
		Uhhh....Order your calendar magnet today....its the time of year, and it will likely be better than the "old" one/s...ha.
	psn.quake.net /psnlist/991222_142250_1.html (591 words)

	coil drawing field magnetics solenoid (Site not responding. Last check: 2007-11-03)
		want a solenoid to become a magnet unless the coil is...
		If the energy level is too low, the field created in the fixture will not fully magnetize (saturate) the magnet.
		...current in the windings of a solenoid with its own magnetic field are...
	www.nettome.info /ipages/solenoid/coil-drawing-field-magnetics-solenoid (126 words)

	A transformerless Tesla coil
		Continuing the studies about directly coupled multiple resonance networks operated as Tesla coil like devices, I built a 6th-order system, that is equivalent to a "Tesla magnifier", but without a transformer.
		, the output resonator coil with 28.2 mH, the terminal with a telescopic antenna, the NST and the spark gap are also the same.
		Multires can make all the design calculations for this circuit and other low-pass multiple resonance circuits of different orders and modes..
	www.coe.ufrj.br /~acmq/tesla/mres6.html (1173 words)

	Chapter 21 Multiple Choice (Site not responding. Last check: 2007-11-03)
		The strengths of the two poles of a magnet are the same.
		4 F. An electron with a speed v perpendicular to a magnetic field B experiences a force F that causes it to move along a circular path of radius r.
		Quickly inserting the north end of a bar magnet into a coil of wire causes the needle of a meter to deflect to the right.
	www.physics.vanderbilt.edu /panvini/p110a/Ch21.html (464 words)

	Read about Multiple coil magnet at WorldVillage Encyclopedia. Research Multiple coil magnet and learn about Multiple ... (Site not responding. Last check: 2007-11-03)
		Read about Multiple coil magnet at WorldVillage Encyclopedia.
		The multiple coil magnet was invented by Joseph Henry in
		It is an electromagnet, that has several coils of wire connected in
	encyclopedia.worldvillage.com /s/b/Multiple_coil_magnet (100 words)

	Joseph Henry The Edison Exploratorium (Site not responding. Last check: 2007-11-03)
		William Sturgeon’s electromagnet, which used loosely coiled uninsulated wire.
		electrodes attached to a battery, it is best to wind several coils of wire in parallel, but, when using a set up with multiple batteries, there should be only one single, long coil used.
		The rocking motion was caused by on of the two leads on both ends of the magnet rocker touching one of the two battery cells, causing a polarity change, and rocking the opposite direction until the other two leads hit the other battery.
	www.edisonexploratorium.org /JosephHenry.html (432 words)

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