Hi design engineers.
What is the highest KVA can be obtained from the Flyback converter.
What are the factors which limits its KVA capability ?
How YouTube 3D Came to Be [Q&A]
About a year ago, YouTube made a quiet upgrade—it began to support 3D content. But the even neater thing? The work was essentially that of one employee who worked on the project in his spare "20%" time. More »
YouTube - Business - Site Management - Content Management - Business Services
Atlantis lifts off for the last time at 18:20 UT today | Bad Astronomy
[UPDATE: Atlantis launch went smooth as silk. The Orbiter is doing its thing, and will proceed to the space station.]
The Space Shuttle Atlantis is scheduled for liftoff today at 18:20 UT (14:20 Eastern US time) for its final mission to the International Space Station. After it lands 12 days laterSometime later it will be officially retired from the fleet [statement updated, see first comment below.]
I will be covering the launch from Twitter using my BANews feed. There are lots of others covering the event as well, including my friend Tim Farley. You can also watch it all live on NASA TV. As I write this, there’s a 70% chance of liftoff (high clouds may mess things up).
Atlantis is the first of the Orbiters to retire. The last scheduled flight of a Shuttle, Endeavour’s, is scheduled tentatively for mid-November. Discovery’s last mission launches on September 16.
Whatever You Do, Don’t Use Apple Support This Weekend [Leak]
Basically all of Apple's support servers will be offline this weekend, so "customer support will be limited to basic troubleshooting," according to an internal memo. So avoid all forms of Apple tech support, from Apple Stores to Authorized Service Providers. More »
Apple - Product Support - Companies - Apple Store - Macintosh
Reminder: We’ve Become So, So Lame [Retromodo]
The Fastest Way to Get a Google Voice Account [Google]
Well, besides knowing somebody with invites. If, for some reason, you still aren't in Google Voice, all you need is a .edu email address, and you'll get a priority invite from Google, which should arrive in about 24 hours. Just go here to sign up. [Google] More »
Google - Google Voice - Searching - Search Engines - Companies
Atlantis Prepares For Its Last FLight
Gorgeous Atlantis Set to Soar, Ken Kremer
"Space Shuttle Atlantis was unveiled for blast off to the heavens above on a sunny late Thursday afternoon (May 13) as the countdown clocks tick down for launch on Friday at 2:20 PM EDT from the Kennedy Space Center in Florida."
Atlantis GO for Launch as Soyuz Clears Path, Ken Kremer
"NASA Shuttle managers met early this morning and then announced a unanimous "GO" for launch of Atlantis on her last planned flight to space at today's (May 12) press briefing at the Kennedy Space Center. There are no technical issues standing in the way of a launch from pad 39 A on Friday, May 14. "Everything is looking great. The vehicle is in great shape out at the pad," said Mike Moses, chair of the Mission Management Team."
Driving to Devon Island Across Sea Ice – Update: Track Progress Live
"An international team led by Mars Institute scientist Dr. Pascal Lee will depart the Arctic community of Resolute Bay today aboard the Moon-1 Humvee Rover on a sea-ice crossing expedition. The team is headed for the Haughton-Mars Project Research Station (HMPRS) on Devon Island, High Arctic, a remote outpost dedicated to space exploration on the world's largest uninhabited island. The Moon-1 is an experimental vehicle simulating future pressurized rovers that will one day allow humans to explore long distances on the Moon and Mars. Last year, the scientists completed a record-setting 494 km drive on sea-ice in the Moon-1 along the fabled Northwest Passage between Kugluktuk and Cambridge Bay, Nunavut."
Keith's update: You can follow the Moon-1 Humvee as it traverses the ice between Cornwallis Island and Devon Island here LIVE via SPOT. Status reports are online here. As you can see, they are now on the sea ice.
Keith's note: ARC PAO is deliberately ignoring this activity even though it is coordinated at ARC. Go figure. FAIL.
Scientists Craft Tiny Transistor Powered by Your Own Cellular Fuel | 80beats
The structure of Aleksandr Noy’s new transistor is unimpressively simple: just a carbon nanotube connecting two metal electrodes. But what makes it special is what he and his team use to control it: adenosine triphosphate (ATP), the fuel from our own cells. The project, published in a study in Nano Letters, achieves a key step in unifying man and machine.
The way it works: An insulator coats the ends of the nanotube, but not the middle—it’s left exposed.
The entire device is then coated again, this time with a lipid bi-layer similar to those that form the membranes surrounding our body’s cells [New Scientist].
Finally, the team poured a solution of ATP plus potassium and sodium across the transistor. That created an electric current, one that was stronger the more ATP they poured.
The magic is in the lipid bi-layer, which contains an ATP-sensitive protein that serves as a kind of ion pump when ATP is present. The lipid hydrolyses ATP molecules, with each occurence causing three sodium ions to move one way through the lipid and two potassium ions to move the other way, netting one charge across the bi-layer to the nanotube [Popular Science].
Noy claims to have created “the first example of a truly integrated bioelectronic system,” New Scientist says. And as simple as the transistor is, the idea behind it—harnessing the energy already in our bodies to power electronics—will be one of the keys to creating battery-free devices that monitor our cells, connect to our brains, or do things we won’t think of until we’ve (finally!) got nanodevices hooked up to our brains.
Related Content:
DISCOVER: Future Tech: The Carbon Nanotube Grows Up
DISCOVER: 9 Ways Carbon Nanotubes Might Just Rock the World
80beats: Nanotubes + Waves of Heat = A Brand New Way To Make Electricity
80beats: Nanotubes Could Provide the Key to Flexible Electronics
Image: Aleksandr Noy et. al.
Commercial Space Enables Exploration
Going commercial frees NASA for deeper space, Alan Stern, Orlando Sentinel
"The administration's wise commercialization approach echoes an immensely successful path taken by NASA in the past. Consider: At the dawn of the Space Age, all satellites were built and launched by governments. But early on, communications satellites were encouraged to go commercial. The result: a $100 billion-plus spinoff industry that employs thousands of workers to build the satellites, their ground stations, launchers and associated command and control infrastructure. It also launches more satellites annually than any other form of spaceflight. The money saved frees NASA to do other things with its resources."
Travel Between LA and Vegas Without Fear Or Loathing On The Gambling Train [Trains]
Now that road-safety laws have tightened up since the '70s when Fear and Loathing was published, you'll need to look at alternative transport for your LA-to-Las-Vegas trip if you want to play Hunter S. Thompson while under the influence. More »
Hunter S. Thompson - Video game - Games - Roleplaying - Fear and Loathing in Las Vegas
Electrical Relays
Do relays operate in A.C as well as in DC?
Motor Differential Relay Tripping
One of the our Raw mill motor (cement mill) Motor differential Relay is tripping
Motor kw 4800
volt 6600v
A 470
Freq 50HZ
RPM 992
PF 0.81
Motor CT ratio 500/1, class-ps,Vk-79.
$5 Homemade Toaster Teaches the Value of Walmart [Design]
Art student Thomas Thwaites created a lofty personal challenge: remake a £3.99 toaster he bought new at a shop from scratch. This corded glob is what he came up with...and while it's a bit different from the model, it works. More »
Video Toaster - Graphics - Animation and Design Tools - 3D - Arts
IDMT Relays
IDMT relays are mostly used for protective relays where A.C quantities are involved.These relays are used as overcurrent relays and sometimes as earth fault relay.
Such relays have metallic disc and the spindle of this disc consists of a moving contact which bridge two fixed contacts
T
Gizmodo Summer Internships in New York and San Francisco [Announcements]
Hello college students. It's summer, that most magical of seasons. You want an awesome internship. We have one. A couple actually, in New York and San Francisco. More »
New York City - New York - San Francisco - United States - Religion and Spirituality
DIY Engine Pulleys and Carbon Fiber Interior
In this episode, Motorz TV shows you how to install underdrive engine pulleys and a carbon fiber interior. There are two installs in this segment, both on 2008 Ford Mustang GTs.
The first install explains how to upgrade stock underdrive pulleys to reduce accessory drag and impro
Kitchen Renovations, Part 3
Reconstruction
Once the walls in my kitchen were bare, it was time to cover them again. I had decided to use the moisture-resistant drywall, which I have always known as greenboard. To my surprise, what I knew as greenboard was actually purple at my local hardware store.
Cutting and instal
VPN Latency Problem
Does anyone have any experience with VPN on Sat Internet?
I am told that due to latency that I can not setup a VPN.
Does anyone know of a work around, I need to be able to connect to my work PC and change programs.
Is there a way of setting up the VPN so that w
Cellphones Now Used More for Data Than for Calls
From New York Times:
For many Americans, cellphones have become irreplaceable tools to manage their lives and stay connected to the outside world, their families and networks of friends online. But increasingly, by several measures, that does not mean talking on them very much.