The Use Of Custom Toroidal Transformers

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byalex

When it comes to the choice of transformers for any type of electrical device or system, there are many different options to consider. Different types of transformers can be more or less costly, but often the price is not as much a factor as the performance ability in the system.

One of the options to consider for a system with low kVA ratings is a toroidal transformer. While there are standard off the shelf options available, the choice of custom toroidal transformers allows the OEM to have a transformer built to the specifications of the system.

[youtube]http://www.youtube.com/watch?v=mzl5JnnAwBg[/youtube]

The Materials and Design

When it comes to custom toroidal transformers, there are different decisions to be considered with each of the components involved. The first choice is in the material used to develop the donut-shaped core. While ferrite and iron are commonly used, it is also possible to use silicon steel or iron powder.

The size of the custom toroidal transformers, as well as the type of winding pattern, are two additional critical considerations. These passive components can be relatively small and have very sparse windings, or they can have very tight, close windings based on the specific requirements for the system.

Windings can have a return wire, return winding or even split return windings, all depending on the specific needs of the system and the development of the magnetic field that is required.

As most of the toroidal transformers are designed to be very small and compact, the choice of a custom design allows for even greater efficiency and smaller sizes based on the needs of the system design. Most sizes of custom-designed toroidal transformers are also available in different mounting options, which make it easier for installation and fabrication than standard toroidal transformers may offer.

CanadaVOTES: NDP candidate David Sparrow in Don Valley West

Friday, October 10, 2008

In an attempt to speak with as many candidates as possible during the 2008 Canadian federal election, Wikinews has talked via email with David Sparrow. Sparrow is a candidate in Ontario’s Don Valley West riding, running under the New Democratic Party (NDP) banner. The riding was set to vote in a by-election on September 22, 2008, following the resignation of John Godfrey, but Stephen Harper’s sudden election call nulled that effort.

Also running in the Toronto riding are Liberal Rob Oliphant, Conservative John Carmichael, Green Georgina Wilcock, and Communist Catherine Holliday.

The following is an interview with Sparrow, conducted via email. The interview is published unedited, as sent to Wikinews.

World’s oldest living woman dies at age 115

Friday, January 19, 2007

The world’s oldest known woman, Montrealer Julie Winnefred Bertrand, died on Thursday, passing away peacefully in her sleep.

She earned the distinction as the oldest living woman when 116-year-old Elizabeth Bolden of Tennessee, U.S.A. died on December 11, 2006.

Bertrand was born on September 16, 1891 in Coaticook, a town in Quebec’s Eastern Townships, and lived there for the majority of her life. She was the oldest of six children, and never married. She moved to Montreal after the death of her parents, and later moved into a nursing home.

She had never left her sixth-floor room in the nursing home for two years, but unexpectedly, she asked to tour the building the day before she died.

Bertrand will be buried in Coaticook.

Lobby groups oppose plans for EU copyright extension

Tuesday, February 26, 2008

The European Commission currently has proposals on the table to extend performers’ copyright terms. Described by Professor Martin Kretschmer as the “Beatles Extension Act”, the proposed measure would extend copyright from 50 to 95 years after recording. A vast number of classical tracks are at stake; the copyright on recordings from the fifties and early sixties is nearing its expiration date, after which it would normally enter the public domain or become ‘public property’. E.U. Commissioner for the Internal Market and Services Charlie McCreevy is proposing this extension, and if the other relevant Directorate Generales (Information Society, Consumers, Culture, Trade, Competition, etc.) agree with the proposal, it will be sent to the European Parliament.

Wikinews contacted Erik Josefsson, European Affairs Coordinator for the Electronic Frontier Foundation (E.F.F.), who invited us to Brussels, the heart of E.U. policy making, to discuss this new proposal and its implications. Expecting an office interview, we arrived to discover that the event was a party and meetup conveniently coinciding with FOSDEM 2008 (the Free and Open source Software Developers’ European Meeting). The meetup was in a sprawling city centre apartment festooned with E.F.F. flags and looked to be a party that would go on into the early hours of the morning with copious food and drink on tap. As more people showed up for the event it turned out that it was a truly international crowd, with guests from all over Europe.

Eddan Katz, the new International Affairs Director of the E.F.F., had come over from the U.S. to connect to the European E.F.F. network, and he gladly took part in our interview. Eddan Katz explained that the Electronic Frontier Foundation is “A non-profit organisation working to protect civil liberties and freedoms online. The E.F.F. has fought for information privacy rights online, in relation to both the government and companies who, with insufficient transparency, collect, aggregate and make abuse of information about individuals.” Another major focus of their advocacy is intellectual property, said Eddan: “The E.F.F. represents what would be the public interest, those parts of society that don’t have a concentration of power, that the private interests do have in terms of lobbying.”

Becky Hogge, Executive Director of the U.K.’s Open Rights Group (O.R.G.), joined our discussion as well. “The goals of the Open Rights Group are very simple: we speak up whenever we see civil, consumer or human rights being affected by the poor implementation or the poor regulation of new technologies,” Becky summarised. “In that sense, people call us -I mean the E.F.F. has been around, in internet years, since the beginning of time- but the Open Rights Group is often called the British E.F.F.

Contents

  • 1 The interview
    • 1.1 Cliff Richard’s pension
    • 1.2 Perpetual patents?
    • 1.3 The fight moves from the U.K. to Europe
    • 1.4 Reclaiming democratic processes in the E.U.
  • 2 Related news
  • 3 Sources
  • 4 External links

Several earthquakes shake Nevada

Thursday, February 21, 2008

Several small earthquakes have been reported near Wells, Nevada after a large magnitude 6.0 earthquake struck the region at 6:16 a.m. PST (UTC-8).

The 6.0 quake, centered 12 miles (19 kilometers) from Wells had a depth of 5.6 miles (9 km) and caused at least 25 buildings to collapse. Damage to other buildings and windows was also reported, and at least two water mains were ruptured. Several cars were hit by bricks as they fell off buildings. One person was hospitalized for a broken arm, but no other injuries were reported.

At least 30 aftershocks ranging from a magnitude 2.0 to 4.0 have been reported since the early morning quake. The quake could be felt as far away as California, Idaho and Utah.

Officials in Nevada are currently inspecting roads and dams in the region for damage. FEMA is also on their way to the area to help in the inspections.

Warhol’s photo legacy spread by university exhibits

Tuesday, January 28, 2014

Evansville, Indiana, United States — This past week marked the opening night of an Andy Warhol exhibit at the University of Southern Indiana. USI’s art gallery, like 189 other educational galleries and museums around the country, is a recipient of a major Warhol donor program, and this program is cultivating new interest in Warhol’s photographic legacy. Wikinews reporters attended the opening and spoke to donors, exhibit organizers and patrons.

The USI art gallery celebrated the Thursday opening with its display of Warhol’s Polaroids, gelatin silver prints and several colored screen prints. USI’s exhibit, which is located in Evansville, Indiana, is to run from January 23 through March 9.

The McCutchan Art Center/Pace Galleries at USI bases its exhibit around roughly 100 Polaroids selected from its collection. The Polaroids were all donated by the Andy Warhol Photographic Legacy Program, according to Kristen Wilkins, assistant professor of photography and curator of the exhibit. The Andy Warhol Foundation for the Visual Arts made two donations to USI Art Collections, in 2007 and a second recently.

Kathryn Waters, director of the gallery, expressed interest in further donations from the foundation in the future.

Since 2007 the Andy Warhol Photographic Legacy Program has seeded university art galleries throughout the United States with over 28,000 Andy Warhol photographs and other artifacts. The program takes a decentralized approach to Warhol’s photography collection and encourages university art galleries to regularly disseminate and educate audiences about Warhol’s artistic vision, especially in the area of photography.

Contents

  • 1 University exhibits
  • 2 Superstars
  • 3 Warhol’s photographic legacy
  • 4 USI exhibit
  • 5 Sources

Wikinews provides additional video, audio and photographs so our readers may learn more.

Wilkins observed that the 2007 starting date of the donation program, which is part of the Andy Warhol Foundation for the Visual Arts, coincided with the 20th anniversary of Andy Warhol’s death in 1987. USI was not alone in receiving a donation.

K.C. Maurer, chief financial officer and treasurer at the Andy Warhol Foundation, said 500 institutions received the initial invitation and currently 190 universities have accepted one or more donations. Institutional recipients, said Mauer, are required to exhibit their donated Warhol photographs every ten years as one stipulation.

While USI is holding its exhibit, there are also Warhol Polaroid exhibits at the Tang Teaching Museum and Art Gallery at Skidmore College in Saratoga Springs, New York and an Edward Steichen and Andy Warhol exhibit at the Mary & Leigh Block Museum of Art at Northwestern University in Evanston, Illinois. All have received Polaroids from the foundation.

University exhibits can reach out and attract large audiences. For example, the Weatherspoon Art Museum at the University of North Carolina at Greensboro saw attendance levels reach 11,000 visitors when it exhibited its Warhol collection in 2010, according to curator Elaine Gustafon. That exhibit was part of a collaboration combining the collections from Duke University, located in Durham, North Carolina, and University of North Carolina at Chapel Hill, which also were recipients of donated items from the Andy Warhol Photographic Legacy Program.

Each collection donated by the Andy Warhol Photographic Legacy Program holds Polaroids of well-known celebrities. The successful UNC Greensboro exhibit included Polaroids of author Truman Capote and singer-songwriter Carly Simon.

“I think America’s obsession with celebrity culture is as strong today as it was when Warhol was living”, said Gustafon. “People are still intrigued by how stars live, dress and socialize, since it is so different from most people’s every day lives.”

Wilkins explained Warhol’s obsession with celebrities began when he first collected head shots as a kid and continued as a passion throughout his life. “He’s hanging out with the celebrities, and has kind of become the same sort of celebrity he was interested in documenting earlier in his career”, Wilkins said.

The exhibit at USI includes Polaroids of actor Dennis Hopper; musician Nick Rhodes of Duran Duran; publishers Jann Wenner of Rolling Stone Magazine and Carlo De Benedetti of Italy’s la Repubblica; disco club owner Steve Rubell of Studio 54; photographers Nat Finkelstein, Christopher Makos and Felice Quinto; and athletes Vitas Gerulaitis (tennis) and Jack Nicklaus (golf).

Wikinews observed the USI exhibit identifies and features Polaroids of fashion designer Halston, a former resident of Evansville.

University collections across the United States also include Polaroids of “unknowns” who have not yet had their fifteen minutes of fame. Cynthia Thompson, curator and director of exhibits at the University of Arkansas, Fayetteville, said, “These images serve as documentation of people in his every day life and art — one which many of us enjoy a glimpse into.”

Warhol was close to important touchstones of the 1960s, including art, music, consumer culture, fashion, and celebrity worship, which were all buzzwords and images Wikinews observed at USI’s opening exhibit.

He was also an influential figure in the pop art movement. “Pop art was about what popular American culture really thought was important”, Kathryn Waters said. “That’s why he did the Campbell Soup cans or the Marilyn pictures, these iconic products of American culture whether they be in film, video or actually products we consumed. So even back in the sixties, he was very aware of this part of our culture. Which as we all know in 2014, has only increased probably a thousand fold.”

“I think everybody knows Andy Warhol’s name, even non-art people, that’s a name they might know because he was such a personality”, Water said.

Hilary Braysmith, USI associate professor of art history, said, “I think his photography is equally influential as his graphic works, his more famous pictures of Marilyn. In terms of the evolution of photography and experimentation, like painting on them or the celebrity fascination, I think he was really ground-breaking in that regard.”

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The Polaroid format is not what made Warhol famous, however, he is in the company of other well-known photographers who used the camera, such as Ansel Adams, Chuck Close, Walker Evans, Robert Mapplethorpe, and Helmut Newton.

Wilkins said, “[Warhol] liked the way photo booths and the Polaroid’s front flash looked”. She explained how Warhol’s adoption of the Polaroid camera revealed his process. According to Wilkins, Warhol was able to reproduce the Polaroid photograph and create an enlargement of it, which he then could use to commit the image to the silk screen medium by applying paint or manipulating them further. One of the silk screens exhibited at USI this time was the Annie Oakley screen print called “Cowboys and Indians” from 1987.

Wilkins also said Warhol was both an artist and a businessperson. “As a way to commercialize his work, he would make a blue Marilyn and a pink Marilyn and a yellow Marilyn, and then you could pick your favorite color and buy that. It was a very practical salesman approach to his work. He was very prolific but very business minded about that.”

“He wanted to be rich and famous and he made lots of choices to go that way”, Wilkins said.

It’s Warhol. He is a legend.

Kiara Perkins, a second year USI art major, admitted she was willing to skip class Thursday night to attend the opening exhibit but then circumstances allowed for her to attend the exhibit. Why did she so badly want to attend? “It’s Warhol. He is a legend.”

For Kevin Allton, a USI instructor in English, Warhol was also a legend. He said, “Andy Warhol was the center of the Zeitgeist for the 20th century and everything since. He is a post-modern diety.”

Allton said he had only seen the Silver Clouds installation before in film. The Silver Clouds installation were silver balloons blown up with helium, and those balloons filled one of the smaller rooms in the gallery. “I thought that in real life it was really kind of magical,” Allton said. “I smacked them around.”

Elements of the Zeitgeist were also playfully recreated on USI’s opening night. In her opening remarks for attendees, Waters pointed out those features to attendees, noting the touches of the Warhol Factory, or the studio where he worked, that were present around them. She pointed to the refreshment table with Campbell’s Soup served with “electric” Kool Aid and tables adorned with colorful gumball “pills”. The music in the background was from such bands as The Velvet Underground.

The big hit of the evening, Wikinews observed from the long line, was the Polaroid-room where attendees could wear a Warhol-like wig or don crazy glasses and have their own Polaroid taken. The Polaroids were ready in an instant and immediately displayed at the entry of the exhibit. Exhibit goers then became part of the very exhibit they had wanted to attend. In fact, many people Wikinews observed took out their mobiles as they left for the evening and used their own phone cameras to make one further record of the moment — a photo of a photo. Perhaps they had learned an important lesson from the Warhol exhibit that cultural events like these were ripe for use and reuse. We might even call these exit instant snap shots, the self selfie.

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Children enjoy interacting with the “Silver Clouds” at the Andy Warhol exhibit. Image: Snbehnke.

Kathryn Waters opens the Andy Warhol exhibit at USI. Image: Snbehnke.

At the Andy Warhol exhibit, hosts document all the names of attendees who have a sitting at the Polaroid booth. Image: Snbehnke.

Curator Kristin Wilkins shares with attendees the story behind his famous Polaroids. Image: Snbehnke.

A table decoration at the exhibit where the “pills” were represented by bubble gum. Image: Snbehnke.

Two women pose to get their picture taken with a Polaroid camera. Their instant pics will be hung on the wall. Image: Snbehnke.

Even adults enjoyed the “Silver Clouds” installation at the Andy Warhol exhibit at USI. Image: Snbehnke.

Many people from the area enjoyed Andy Warhol’s famous works at the exhibit at USI. Image: Snbehnke.

Katie Waters talks with a couple in the Silver Clouds area. Image: Snbehnke.

Many people showed up to the new Andy Warhol exhibit, which opened at USI. Image: Snbehnke.

At the exhibit there was food and beverages inspired to look like the 1960s. Image: Snbehnke.

A woman has the giggles while getting her Polaroid taken. Image: Snbehnke.

A man poses to get his picture taken by a Polaroid camera, with a white wig and a pair of sunglasses. Image: Snbehnke.

Finished product of the Polaroid camera film of many people wanting to dress up and celebrate Andy Warhol. Image: Snbehnke.

Democratic holdout agrees to support health care reform in US

Sunday, December 20, 2009

A conservative Democratic United States senator has agreed to supply the key 60th vote needed for passage of a sweeping health care reform package. Senate Democrats have reached a breakthrough in their struggle to pass sweeping heath care reform legislation, lining up the 60 votes needed to overcome fierce Republican opposition. Senators met Saturday in Washington, D.C. during a driving snowstorm in a frenzied effort to move forward on President Barack Obama’s top domestic priority.

The spotlight was on moderate Democratic Senator Ben Nelson of Nebraska, who had been the last holdout as Senate Democrats raced against the clock and against determined Republican opposition to pass their health care bill by their self-imposed deadline of December 25th, Christmas.

Change is never easy, but change is what is necessary in America today and and that is why I intend to vote for cloture, I intend to vote for cloture and for health care reform.

Nelson said he is now ready to vote for cloture, which would advance the bill. “Change is never easy, but change is what is necessary in America today and and that is why I intend to vote for cloture, I intend to vote for cloture and for health care reform,” he said.

Nelson said he decided to support the bill after winning new concessions from Democratic Senate Majority Leader Harry Reid to limit the availability of abortions in insurance sold under the new legislation along with millions of dollars in Medicaid funding for Nebraska.

The legislation would extend health benefits to more than 30 million uninsured Americans and impose new regulations on the health insurance industry.

Senator Reid of Nevada has been working for months to win over one holdout Democratic senator after another, repeatedly altering the bill to satisfy different demands. Reid says reform is essential. “The broken system cannot continue and it will not continue. When President Obama signs this bill into law, we will officially end the era in which insurance companies win only when patients lose,” he said.

The broken system cannot continue and it will not continue. When President Obama signs this bill into law, we will officially end the era in which insurance companies win only when patients lose.

Nelson’s support should pave the way for Senate Democrats to win the first of a series of crucial procedural votes scheduled to begin at one o’clock in the morning on Monday and set to conclude — if everything goes smoothly for them — with final passage on Christmas Eve.

Republicans have been using a number of parliamentary procedures to delay action on the bill, including forcing a reading on the Senate floor Saturday of Reid’s 338-pages of last minute amendments. Republican Senate Minority Leader Mitch McConnell of Kentucky responded to the apparent Democratic breakthrough. “And Democrats are forcing a vote on it, as I indicated, over the weekend, counting on the fact that the American people are preoccupied with Christmas and not paying much attention to what they are doing,” he said.

The history that is being made here, make no mistake about it, the history that is being made here, is the ignoring of the will of the American people.

Republicans are unified in their opposition, saying the bill is too expensive and will not solve the problems with the current health care system. Senator McConnell dismissed claims by Democrats that the bill is historic. “The history that is being made here, make no mistake about it, the history that is being made here, is the ignoring of the will of the American people,” he said.

Senator John McCain of Arizona echoed those comments in the weekly Republican radio address saying, “Regrettably, there’s nothing in this legislation that effectively addresses the problem of health care hyperinflation. In fact, experts tell us the Democrat legislation makes matters worse.”

Democrats say they have been trying to reform the nation’s health care system for close to 70 years, ever since President Franklin Delano Roosevelt was in office. Senator Christopher Dodd of Connecticut was emotional as victory seemed within reach. “All we are trying to do is to guarantee that if you are a fellow citizen of ours, and you are struck with illness or a loved one is, that you will never again have that fear, that you will end up losing your home, your job, your retirement and your life savings because you have been afflicted with an illness through no fault of your own.”

If the Senate is able to pass a bill next week, it would be viewed as a major victory for President Obama. But the bill would still need to be reconciled with a health-care reform bill passed last month by the House of Representatives before the president could sign it into law next year.

Common Problems Associated With A Garage Door In Minnesota

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byAlma Abell

For many homeowners, a garage door is a great way to not only protect the contents of their garage, but their home and family as well. Just like other mechanical objects, garage doors are susceptible to breaking down and needing repairs to maintain their normal function. Usually, any repairs that need to be done to your garage doors should be handled by a certified professional. They will have the tools and the knowledge to fix just about any problem that you have with your garage doors. Many homeowners will try in vain to repair their garage doors, but they usually end up causing more damage in the long run. The following are a few of the common problems associated with a garage door in Minneasota.

Sticking Open or Closed

One of the most common problems associated with a Garage door in Minnesota is it sticking open or closed. The first thing you need to check when you notice this happening is the batteries in the remote control to see if they need replacing. If you open your garage door manually and it sticks on you, then you need to check and make sure that the track is lubricated enough to let the wheel roll up and down unobstructed.

Shimmies and Shakes

Another common problem that people have with a Garage door in Minnesota is bad shimmying or shaking on a regular basis. If you start to notice you are having this problem, the first thing that you need to check is track to make sure it is free of obstructions. If there is not trash or debris in the track, then the track itself may be warped, in which case you may have to have it replaced by a professional. The sooner you call a professional in to help, the less time you will have to waste on not using your garage doors.

If you find yourself in need of garage door repair, then look no further than All American Door CO. They have the experience and knowledge to make sure that all of your repairs are done in a timely and efficient manner.

Canada’s Don Valley West (Ward 26) city council candidates speak

This exclusive interview features first-hand journalism by a Wikinews reporter. See the collaboration page for more details.

Friday, November 3, 2006

On November 13, Torontonians will be heading to the polls to vote for their ward’s councillor and for mayor. Among Toronto’s ridings is Don Valley West (Ward 26). Four candidates responded to Wikinews’ requests for an interview. This ward’s candidates include Muhammad Alam, Bahar Aminvaziri, Orhan Aybars, Michele Carroll-Smith, Mohamed Dhanani, Abdul Ingar, Geoff Kettel, Debbie Lechter, Natalie Maniates, John Masterson, John Parker, David Thomas, Csaba Vegh, and Fred Williams.

For more information on the election, read Toronto municipal election, 2006.

Contents

  • 1 Geoff Kettel
  • 2 Natalie Maniates
  • 3 John Parker
  • 4 Csaba Vegh

Rhode Island congressman Patrick Kennedy involved in car accident near U.S. Capitol

Friday, May 5, 2006

U.S. Representative Patrick J. Kennedy (DRI), son of Massachusetts Senator Edward Kennedy, was involved in a traffic accident near the U.S. Capitol in Washington, D.C.

Capitol Hill Police reported that Kennedy was alone his 1997 Ford Mustang when the accident occurred Thursday at about 2:45 a.m. EDT (0645 UTC) near the 100 block of C Street SE. Police say his eyes were red and watery, and he was unbalanced and had slurred speech. Police also say that Kennedy had received three “notices of infractions” that are connected with the crash.

According to the police report, Kennedy drove his car into a security barrier near the Capitol building. When questioned by the police, he told them that he was “headed to the Capitol to make a vote,” when no votes were scheduled for that time of the morning.

Kennedy said in a written statement that he had returned home around midnight and had taken the sleep aid Ambien and the anti-nausea drug Phenergan, both of which are known to cause drowsiness and sedation. He awakened a couple hours later and was “disoriented” when the incident occurred. He also said that “at no time before the accident” did he take alcohol, and pledged to cooperate in any investigation.

Today, Kennedy said, “Apparently, I was disoriented from the medication” and that he “never asked for any preferential treatment.” He also announced that he is checking himself into the Mayo Clinic in Rochester, Minnesota.

“I know I need help. As in every recovery, each day has its ups and downs.,” added Kennedy. This is not the first time Kennedy has been to the Mayo Clinic. Last Christmas, Kennedy spent time at the clinic and went back to work after he was “feeling focused and in good shape.”

However; Robin Costello, spokeswoman for Kennedy said, “we have no knowledge of any citations,” but she did admit that a report was filed.

Capitol Police have not commented on the report or allegations, but Sgt. Kimberly Schneider, Capitol Police spokeswoman did say, “The United States Capitol Police are continuing to investigate.”

It is not known whether any sobriety test or arrest was made. Kennedy was not injured.

 This story has updates See Rhode Island representative Patrick Kennedy pleads guilty to DUI, June 13, 2006