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Topic: Startup winding

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Induction motor

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Capacitor

Electromagnetism

Tape drive

	Electric motor - Wikipedia, the free encyclopedia
		They may also be started as induction motors using a squirrel-cage winding that shares the common rotor: once the motor reaches synchronous speed, no current is induced in the squirrel-cage winding so it has little effect on the synchronous operation of the motor, aside from stabilizing the motor speed on load changes.
		Also provided all 6 winding connections are available separately, a 3 phase motor can be converted to a capacitor start and run motor by commoning two of the windings and connecting the third via a capacitor to act as a start winding.
		The windings are typically stabilized by being impregnated with epoxy resins.
	en.wikipedia.org /?title=Electric_motor (6091 words)

	[No title]
		Conventionally, a primary winding in one electrical circuit member (usually the stator) is connected to the power source and a secondary electrical circuit (usually the rotor) carries only current induced by the magnetic field of the primary electrical circuit during acceleration of the rotor.
		Stator windings 85 are wound around a cylinder of slotted teeth 811 made of a ferromagnetic material, such as iron or steel, to enhance the magnetic field of the stator winding 85, to guide the windings of these stator windings and to hold the windings.
		The direction of current flow in these windings is indicated by the small circles with either a dot (indicating that this current is in the direction out of the paper) or a cross (indicating that this current is in the direction into the paper) in their centers.
	www.godunov.com /Bucky/patents-fulltext/05325002 (5847 words)

	Switching power supply - Patent 6912141
		After startup, the switching controlling circuit 130 is actuated with the rectified smoothed output by a rectifying smoothing circuit 138, connected to a ternary winding 120C of the converter transformer 120, as a driving power supply.
		The startup circuit 240 includes a constant current circuit 241, connected to a junction between the AC filter 210 and the primary side rectifying smoothing circuit 215, and which is connected through a reverse current inhibiting diode 248 to a power supply terminal 230A of the switching controlling circuit 230.
		After startup, the switching controlling circuit 230 is driven with the rectified smoothed output by the rectifying smoothing circuit 238 connected to the ternary winding 220C of the converter transformer 220 as the driving power.
	www.freepatentsonline.com /6912141.html (3910 words)

	Startup winding - Wikipedia, the free encyclopedia
		A startup winding, also known as the auxiliary winding, is used to create the torque needed to start a single phase induction motor.
		This winding creates the rotating magnetic field in this type of motor by changing the relationship of the current in relation to the voltage.
		This page was last modified 20:11, 7 May 2005.
	en.wikipedia.org /wiki/Startup_winding (79 words)

	Start-up circuit for flyback converter having secondary pulse width modulation - Patent 6456511
		The primary winding 4 is connected to a high frequency inverter 2, which in turn is connected to an input filter and polarity protection (rectifier) circuit 1 in direct connection with the AC mains.
		After startup, a feedback signal from the secondary winding 5 will cause the primary control circuit 12 to stop sending the square wave switching signals when sufficient energy is being transferred to the secondary winding 6 to operate the secondary control circuit 14.
		At startup, since the initial voltage on capacitor 74 is zero because of the drain path through resistor 78, an inrush current flows into capacitor 74 with a magnitude sufficient to provide a conduction control potential at the gate of the MOSFET switch 75.
	www.freepatentsonline.com /6456511.html (6714 words)

	cars - Electric motor
		These rotors take their name from "windings" that are in the style of the wheel on which pet rodents exercise: a series of bars that connect conductive rings at both ends of the rotor.
		In fact, these "windings" are not wound into the rotor but instead are cast aluminum that fills the slots in the stackup of steel laminations.
		Because each winding is a single turn, the induced voltages in the rotor windings are very low and there is no need to insulate the cast-in-place "windings" from the steel laminations.
	www.carluvers.com /cars/Electric_motor (3352 words)

	SSAC Motor Protectors Technical Help 1-800-377-SSAC (7722)
		Voltage variations beyond 110% may cause winding insulation failures due to excessive heat during startup while surge voltages can cause arching across the first turns of a winding.
		Winding insulation subjected to locked rotor current may fail in as little as 15 to 90 seconds.
		This causes the overheating that deteriorates the winding insulation.
	www.ssac.com /motorpro/deftermp.htm (1014 words)

	The Other Road Ahead
		Many startups begin almost by accident-- as a couple guys, either with day jobs or in school, writing a prototype of something that might, if it looks promising, turn into a company.
		Starting a startup to write mainframe software would be a much more serious undertaking than just hacking something together on your Apple II in the evenings.
		Startups are stressful, and this, unfortunately, is also taken to an extreme with Web-based applications.
	www.paulgraham.com /road.html (11422 words)

	impulse_testing_as_a_predictive_maintenance_tool
		This discharge represents a current path that is in parallel to the shorted windings of the coil, and has the effect of reducing the winding’s effective inductance.
		In PM applications, subsequent pulses of the same winding are compared during the ramping of the pulse voltage.
		The rubbing of the windings against each other can cause a turn-turn short, and the potentially available energy feeding into the fault is limited only by the over-current protection of the motor.
	www.reliabilityweb.com /art04/impulse_testing.htm (2992 words)

	Butler Winding Custom Magnetic Products - Company Info
		Butler Winding is Western Pennsylvania's premier producer of transformers and inductors to our own design or the customer specifications.
		From humble beginnings, essentially a "garage" startup to over $1 million in sales, the strengths of Butler Winding were preserved while extending our reach into new territories and new markets.
		In 2002, Butler Winding changed hands and as a result has continued to capitalize on opportunities in the near areas and other areas.
	www.butlerwinding.com /Butler-Winding/index.html (165 words)

	Xantrex Forums: Soft start parameter info
		It does not include the near lock rotor condition at startup combined with the actual start winding current during startup process which is why the 120A measurement result exceeds the lock rotor rating.
		This won't help startup much but will reduce the run current from 15 A to about 13.5 A. As a side note with regard to PF correction with caps on motor side of activation switch.
		Side effect is higher startup surge but for a shorter period of time which is opposite to what I am looking for.
	www.xantrex.com /forum/forum_posts.asp?TID=195&PN=1 (1370 words)

	Sci.Electronics.Repair FAQ: Notes on the Troubleshooting and Repair of Small Household Appliances and Power Tools (Site not responding. Last check: 2007-11-01)
		For starting, the two sets of coils in the stator (starting and running windings) are provided with AC current that is out of phase so that the magnetic field in one peaks at a later time than the other.
		If the startup winding is disconnected (or bad), the motor will start in whichever direction the shaft is turned by hand.
		These are a special case of single phase induction motors where only a single stator winding is present and the required rotating magnetic field is accomplished by the use of 'shading' rings which are installed on the stator.
	straylight.cso.niu.edu /repairfaq/REPAIR/F_appfaqh.html (5321 words)

	Wikinfo \| Electric motor (Site not responding. Last check: 2007-11-01)
		DC motor speed generally depends on a combination of the voltage and current flowing in the motor coils and the motor load or braking torque.
		These motors can generally provide greater starting torque by using a special startup winding in conjunction with a starting capacitor and a centrifugal switch.
		When starting, the capacitor and special winding are temporarily connected to the power source and provide starting torque.
	www.wikinfo.org /wiki.php?title=Electric_motor (1037 words)

	Calculation of electrical inductance
		"Mean diameter" is the arithmetic average of the inner and outer diameters of the winding; for a single layer coil it is measured to the center of the wire.
		If the wire diameter or winding thickness is not explicitly requested, the coil is modeled as a zero thickness current sheet.
		where d is the mean diameter of the winding, in centimeters, and N is the total number of turns.
	www.moshier.net /coildoc.html (726 words)

	Winding Hills Restaurant above-par
		A wintry evening finds us heading toward the green fairways of Winding Hills, an executive golf course in the Town of Montgomery.
		The Winding Hills menu is original and is divided into appetizers, soups and salads, and entrees.
		Winding Hills Restaurant brings upscale, creative and intelligent cuisine to Montgomery.
	www.recordonline.com /archive/2002/02/08/dish8.htm (892 words)

	Power Supply Design: Start-up Bias Power
		We can get a semi-regulated voltage for Vcc just by adding a winding, rectifier, filter to the main power transformer (or even an auxiliary winding on the inductor).
		Either the high-line voltage is high enough to damage parts or the power loss either damages parts or raises havoc with efficiency.
		The solution usually results in a non-trivial startup circuit that gets power from the input during the first several milliseconds of startup and then gets power from the semi-regulated winding discussed earlier when converter operation starts and voltages come up.
	www.smpstech.com /mtblog/startup_bias_power.html (447 words)

	Our Beginning (Site not responding. Last check: 2007-11-01)
		In doing that, she saved overhead costs, which she invested in supplies and startup expenses.
		Winding River Quilt Shop's largest expenditure was a manually guided quilting machine.
		Send mail to Winding River Solutions, Inc. with questions or comments about this web site.
	www.windingriverquiltshop.com /kcstarlisa.htm (671 words)

	Electric Motors -- AC Motors -- DC Motors
		The starting winding is wound with fewer turns of smaller wire than the main winding, so it has a higher resistance.
		capacitor is inserted in series with the startup winding, creating an LC circuit which is capable of a much greater phase shift (and so, a much greater starting torque).
		The windings are typically stabilized by being impregnated with
	www.edinformatics.com /inventions_inventors/electric_motors.htm (3589 words)

	startup - OneLook Dictionary Search
		Startup : NRC Glossary of Nuclear Terms -- [home, info]
		Example: "The startup of the new factory was delayed by strikes"
		Phrases that include startup: startup screen, fall startup event, startup disk, startup volume, startup winding, more...
	www.onelook.com /?w=startup (163 words)

	Power Transformers - Swich Mode Transformer
		Butler winding has a variety of winding machines, bobbin/tube and toroid.
		Note that for the inductor circuit of Figure 1, the average capacitor voltage can never be more than the source voltage even for ideal circuit components.
		Real life voltage drops (diode, transistor, winding resistance) ensure that the average output voltage will be less than the source voltage.
	www.butlerwinding.com /elelectronic-transformer/switch_mode (2043 words)

	AOL for Small Business: The Startup Online Reality Series
		Even as the park successfully expands, the Beckleys focus on their son's illness.
		Even now, with the restaurant’s infrastructure and menu having been overhauled and no signs of frazzled diners leaving the restaurant in droves, Steve sighs, “I’d love to hire a company to take over the restaurant and just lease it out to them, but it’s not that easy: We’re on a mountain.”
		True enough, and because of that, accessibility is always an issue: Both employees and suppliers have to take the seven-minute tram ride up the mountain--and that means all the restaurant's groceries, beverages and alcohol are either hauled up the same way or driven up on a winding, dusty road.
	aolsvc.aol.com /small_biz/startup_series/week_03.adp (1356 words)

	Bootstrap Circuit for Green-Mode Standards
		In these designs, every possible trick is used to eliminate losses when the supply is in standby mode, because even the power dissipated by the bootstrap circuit could cause the power supply to fail these stringent standby input power requirements.
		The only problem with this approach is the power supply would take roughly 3 s to 11 s for the power converter to turn on and this is too much time for most applications.
		This will turn off transistor Q1 as soon as the auxiliary winding is powered up, conserving energy.
	powerelectronics.com /mag/power_bootstrap_circuit_greenmode (1002 words)

	Custom Coils-PolyTec MicroCoils, Production and Prototypes
		PolyTech MicroCoils began 1986 with high volume production engineering experience from the dot matrix printer industries in Germany and the United States, PolyTech continues to serve the prototype coil winding industry as well as the mid volume production coil winding sector.
		We have a current quality manual and inspectors to increase the confidence of the designer and buyer who needs reliable startup quantities of coils.
		PolyTech MicroCoils has continued to grow and expand by developing micro coils for solenoids, for driven coil circuits, for sensing circuits, the medical custom coil winding industry.
	www.coilwinding.5u.com (230 words)

	Air shaft and core chuck press releases
		Using a standard expanding air shaft Convertech adds a simple mechanical crank which controls the lateral movement of the shaft during winding and unwinding.
		Convertech's Trapper leaf air shaft successfully demonstrates a simplified and reliable design which tightly grips the leading edge of web material firmly for easy air shaft startup and winding.
		For many years differential winding has been a time-consuming and dirty process fraught with difficulties.
	www.convertech.com /press-releases.php (3759 words)

	This Old Workbench, Episode 20
		Now, in our quest for the Workbench of our dreams, it is time to start the long and winding road toward customized Nirvana.
		MultiStart allows you to choose between a number of different startup scripts, as well as select which programs in the WBStartup drawer to run, all via a point and click GUI.
		For instance, the default, or normal startup script would have all the commands you want in your normal Amiga boot process.
	www.amigau.com /amigarealm/thisoldworkbench/html/towb20.html (1078 words)

	Coreless Winding Perfected With Introduction of Superior Trapper Leaf Air Shaft
		Coreless Winding Perfected With Introduction of Superior Trapper Leaf Air Shaft
		June 20, 2005 -- Convertech's Trapper leaf air shaft successfully demonstrates a simplified and reliable design which tightly grips the leading edge of web material firmly for easy air shaft startup and winding.
		An automatic release mechanism permits easier removal of finished rolls and trouble-free unloading from the air shaft.
	www.prnewsnow.com /TextNews/35400.html (278 words)

	EliteToolbar Remover 2.1.2 download - TechSpot Downloads
		These programs find and delete it, but it keeps coming back since this new variant is very difficult to remove from the operating system.
		The main problem is that the malware creates a lot of registry entries and executes at PC startup, winding itself into RAM and deletes its own *.exe from the C:\Windows\System32 directory.
		This new version of the EliteToolbar has all the previous disadvantages of the CoolWebSearch malware and some new ones including pop-up windows every 2 minutes, a permanent block of the Google Toolbar (if present), redirecting of any instances of Google and Yahoo web-browsing, and so on...
	www.techspot.com /downloads/422-elite-toolbar-remover.html (762 words)

	Tech Start-up Planning Flying Car - Jalopnik (Site not responding. Last check: 2007-11-01)
		The check's in the mail; I'm from the government and I'm here to help; and Terrafugia will have a flying car available for sale early in 2009.
		But, will it merit a write up in Winding Road?
		Why do people think a car needs to be able to fly.
	jalopnik.com /cars/.../tech-startup-planning-flying-car-155235.php (614 words)

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