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Topic: Solenoid

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	Solenoids as Magnetic Field Sources
		A long straight coil of wire can be used to generate a nearly uniform magnetic field similar to that of a bar magnet.
		Such coils, called solenoids, have an enormous number of practical applications.
		This turns out to be a good approximation for the solenoid field, particularly in the case of an iron core solenoid.
	hyperphysics.phy-astr.gsu.edu /hbase/magnetic/solenoid.html (242 words)

	Solenoid Valves - Solenoid Valve Manufacturers - Pneumatic Solenoid Valves - Plastic Solenoid Valves
		Solenoid valves are electro-mechanical devices that use a wire coil and a movable plunger, called a solenoid, to control a particular valve.
		Their most common use is as solenoid water valves, oil valves, gas valves, steam valves, solvents valves, cryogenics valves, air and vapors valves, as well as many other applications as hydraulic valves and pneumatic valves.
		Because solenoid valves are designed to perform operations, ranging from water valves, air valves, pneumatic valves or used in applications such as ones to restrict, meter and maintain the flow of liquid and gaseous materials, they are widely used in vastly different fields and industries.
	www.iqsdirectory.com /solenoid-valves (1506 words)

	Solenoid Technical Data - Ledex and Dormeyer
		The force or torque of a given solenoid is inversely proportional to the square of the distance between the pole faces.
		Ledex and Dormeyer DC solenoids are specified with two criteria for maximum ON time: when pulsed repeatedly at the stated watts and duty cycle, and; for a single pulse at the stated watts (with the coil at 20°C ambient temperature).
		This reduces the solenoid voltage to a point where the power input is high enough to allow the solenoid to hold in, and yet stay within its normal heat dissipating range.
	www.solenoids.com /solenoid-technical-data.html (2763 words)

	Magnetic Resonance TIP - MRI Database : Solenoid
		Solenoid RF coils are commonly used when the static magnetic field is perpendicular to the long axis of the body.
		The reason against a solenoidal coil is that the signal is missed when the axis of the solenoidal coil is coaxial with the horizontal magnetic field Bo.
		The multi turn solenoid is a volume coil that typically operates as the transmitter and receiver of RF energy.
	www.mr-tip.com /serv1.php?type=db1&dbs=Solenoid (698 words)

	Acro - Solenoid Pinch Valve
		Solenoid pinch valves use a current passing through a solenoid to induce a magnetic field, which then supplies force to a magnetic plunger.
		Acro's solenoid pinch valves are two-way, normally closed, where the tubing is pinched and the flow stopped when the valve is in a de-energized state.
		Pinching forces of solenoid valves are restricted by not only supply voltage, but also by temperature rise and the ability to hold-in once actuated.
	www.acroassociates.com /products/solenoid.html (1246 words)

	Jewell Instruments - Solenoid Theory 101
		Solenoid force is the pull or push force developed by the plunger when the coil is activated.
		If the solenoid is to be used in the vertical mode, and the weight of the plunger has not been considered in determining force-stroke curves, it too must be subtracted from the force available.
		Solenoids are durable devices, but extreme environmental conditions can affect their performance and life expectancy.
	www.jewellinstruments.com /soltheory101.htm (1289 words)

	Solenoid Tutorials - Solenoid Technical Information
		In this example, a Linear solenoid is utilized for its variable positioning capability to smoothly pinch the tube to the operator's precise demand.
		Solenoids can be actuated in milliseconds, or can be velocity controlled to provide smooth, noiseless actuation.
		Solenoid snap-acting response and electric operation are beneficial for part rejection processes in which electronic interfacing with a photosensor or some other sensor is required
	www.solenoids.com /solenoid-applications.html (390 words)

	Solenoid (Site not responding. Last check: )
		A solenoid is made out of a current-carrying wire which is coiled into a series of turns (with the turns preferably as close together as possible).
		In a solenoid, a large field is produced parallel to the axis of the solenoid (in the z-direction in figure 2).
		Outside the solenoid the field is also very weak due to this cancellation effect and for a solenoid which is long in comparison to its diameter, the field is very close to zero.
	ptsg.eecs.berkeley.edu /~helens/edu/sol_page/solenoid.html (349 words)

	Solenoid Summary
		The pneumatic solenoid is akin to a transistor, allowing a relatively small signal to control a large device.
		Hydraulic solenoid valves are in general similar to pneumatic solenoid valves except that they control the flow of hydraulic fluid (oil), often at around 3000 psi (210 bar, 21 MPa, 21 MN/m²).
		Hydraulic machinery uses solenoids to control the flow of oil to rams or actuators to (for instance) bend sheets of titanium in aerospace manufacturing.
	www.bookrags.com /Solenoid (1108 words)

	Solenoid glossary - The Solenoid Company
		A solenoid is normally rated at a duty cycle based on a standard ambient temperature of 35°C and a particular, chosen voltage.
		A solenoid with a standard duty cycle of n% will be equivalent to a deviating duty cycle of (n+/-x)% if the ambient temperature or voltage is changed.
		This is the part of the solenoid which is moved by the armature, on energisation of the coil.
	www.thesolenoidcompany.com /glossary.php (1543 words)

	Browse by Artist: SOLENOID
		Solenoid is a well-established IDM producer who knows that you don't need new tools to tell new stories.
		Solenoid's new album, Supernature, is made with a familiar palette of analog sounds in which the venerable 303 features prominently.
		But Solenoid finds new territory with these classic sounds, using his mastery of synthesis as a base camp from which to explore new ideas in writing and arrangement.
	www.forcedexposure.com /artists/solenoid.html (621 words)

	Cliftronics - Solenoid Design Guide
		The force (linear solenoids) or torque (rotary solenoids) is the load that the solenoid is capable of pulling, pushing, holding or rotating, at the start of a specified motion, when energized under a specific set of operating conditions (input voltage, ambient temperature and duty cycle).
		Force or torque may be predicted for this solenoid at 125°C by applying a current of.17 amps to the unit at 20°C. The actual coil stabilized temperature may be determined by measuring the proportional change in resistance with temperature.
		The response time, or "pull in time", of a solenoid is the time, usually in milliseconds (ms), from the point at which power is applied to the coil, until the plunger, armature or shaft has reached the end of it's design stroke or rotation.
	www.cliftronics.com /design_guide.html (2827 words)

	Solenoid Valves
		Solenoids often have a hole in the middle and a protruding metal rod that is pushed or pulled by magnetism when power is applied.
		A solenoid valve uses a solenoid to actuate a valve.
		You may have obtained a solenoid valve that is not new from the factory.
	wolfstone.halloweenhost.com /Pneumatics/pnuvlv_SolenoidValves.html (1308 words)

	Electric solenoid shifter - Patent 6131682
		An electric solenoid shifter for motorcycles for clutchless shifting of the motorcycle by pushing a button mounted on the handlebars of the motorcycle includes a solenoid mounting plate for securing a solenoid to the motorcycle and a micro-switch which is operably linked to the solenoid and mounted on the motorcycle.
		A cable clamp for securing a solenoid cable is secured to the solenoid and to a spring which is secured to the cable clamp and to a solenoid cable bracket.
		Electric solenoid shifter 10 is easily secured to or removed from a motorcycle or other vehicle and may be mounted so that the only components in plain view are the shifter bracket assembly and a small portion of solenoid cable 28.
	www.freepatentsonline.com /6131682.html (2504 words)

	Solenoid \| World of Invention
		A solenoid is device that uses the principle of an electromagnet to convert electrical current into mechanical movement.
		He also experimented with magnetic fields that were created by current flowing in a circular wire and theorized that a helix of wires, or a wire coiled like a bedspring, would behave like a bar magnet, and consequently have a north and south pole.
		The starter of an automobile is actuated by a solenoid; turning the key energizes the coil, which pulls the solenoid in to complete the starting circuit, and the engine starts.
	www.bookrags.com /research/solenoid-woi (486 words)

	Railway solenoid applications - The Solenoid Company
		A modified standard linear solenoid is used as part of an integrated locking mechanism that prevents unauthorised access to trackside enclosures.
		Sefety interlock on passenger car doors use a solenoid operated mechanism that is controlled remotely by the train manager.
		The Solenoid Comapny has developed a special solenoid for the operation of fire extinguisers in locomotives.
	www.thesolenoidcompany.com /railway_applications.php (228 words)

	What is a Solenoid?
		A solenoid is a device which converts energy into linear motion.
		Solenoids are commonly found in electric bell assemblies, automotive starter systems, industrial air hammers and many other devices which rely on a sudden burst of power to move a specific part.
		When the solenoid has released all of its energy, the hydraulic fluid drains out of the chamber and the piston is drawn back to its original position.
	www.wisegeek.com /what-is-a-solenoid.htm (645 words)

	Lab E2: B-field of a Solenoid
		Consider a solenoid of N turns and length L, carrying a current I; the number of turns/length is n = N/L. For a long solenoid of many turns, the B-field within is nearly uniform, while the field outside is close to zero.
		Near the ends of a finite-length solenoid, the field is smaller than predicted by (5); at the ends of a finite solenoid, B is 1/2 its maximum value.
		As one moves along the axis of the solenoid away from its center, the B-field drops continuously and is very small at positions outside the solenoid and far from its edge.
	www.colorado.edu /physics/phys1140/phys1140_f98/Experiments/E2/E2bfield.html (1787 words)

	Scott's Nova Resource Site - Remote Starter Solenoid Installation
		Here's how and why it works: On the GM solenoid, the winding is fed through a resistive lead to the starter from the switch key, which results in less than the 12 volts being applied across the solenoid winding.
		The Ford solenoid, when installed, solves this problem by applying the full battery voltage across the GM solenoid activation winding, resulting in positive operation of the solenoid, pinion gear and rotation of the starter motor.
		Use the new additional battery cable to connect the same "A" terminal of the Ford solenoid to the battery terminal on the GM solenoid.
	www.novaresource.org /starter.htm (917 words)

	The D0 Upgrade - Solenoid
		The superconducting (SC) solenoid, a two layer coil with mean radius of 60cm, has a stored energy of 5MJ (for reference the CDF coil is 30MJ).
		This uniformity is achieved in the the absence of a field-shaping iron return yoke by using two grades of conductor with higher current density near the ends of the coil.
		The solenoid is the first thin solenoid for a particle physics detector which operates at 2 Tesla.
	www-d0.fnal.gov /solenoid (416 words)

	Solenoid valve
		Solenoid valves are designed using corrosion resistant thermoplastics and premium elastomer seals to offer bubble tight shut-off service and million cycle durability.
		- An electric solenoid coil is basically a simple electromechanical unit used to control the opening and closing of a valve.
		The sizing of the valve is dependent upon the flow rate required through the valve, the allowable pressure drop of the solution through the valve, the inlet pressure and back pressure of the solution.
	www.kthsales.com /website/vendors/POM/POM-solenoid-valve.htm (646 words)

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