powerelectronics

Linux in 2008: New Linux Powered Devices

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Dec 082011
 

In 2007, the Linux operating system proved more popular than ever. 2008 is set to be an exceptional year with more computers and devices running Linux behind the scenes. These are just some of the new devices planned for 2008 Linux powered desktop PCs Microsoft has had a stranglehold on the desktop for the last 20 years. With Apple moving upstart and less than stellar performance of the new Vista operating system, Microsoft is conducting a public relations war at all. The Redmond company has committed to spend $ 500 million in advertising in the new operating system. The time might be right for the open source operating system Linux to take a bigger slice of the pie desktop. Original Equipment Manufacturers (OEM) seem to think so, especially at the low cost sector. Everex Everex gPC gPC launched just in time for Christmas in 2007 and sold out immediately Walmart. It's modest hardware works with Linux operating system gOS to a surprisingly fast pace. Everex People believe that most users spend most of their time surfing the web. With this in mind, the whole system is designed around Firefox and Google's web applications. Many users felt the gOS is too limited and found Ubuntu works well on this computer 1.5GHz. For the price of $ 199 you also get 512 MB of RAM, 80GB hard drive, a DVD / CD-RW, keyboard, mouse and speakers. Just add a monitor and has a perfect team with the second. Walmart just replenishing their supplies of the CPG. Shuttle KPC In this year's CES, specialty PC maker Shuttle unveiled its latest small form factor (SFF). KPC will come in two flavors, a full $ 199 with Intel Celeron processor, a 945GC chipset, 512 MB of memory and either 60GB or 80GB hard drive and an updatable $ 99 barebones model with a Core Duo and 1GB of memory. Interesting is the decision not to send an optical drive. The system comes in the case of the familiar cube-shaped Shuttle XPC line, but with a selection of colorful graphics on the cover attractive to a younger set of customers Myspace. Dell Inspiron desktop Linux PC The function N and 530 N 1420, Ubuntu 7.10 notebook and embedded software DVD player. Both come with Intel Dual Core 2 processor with 1 GB of RAM and hard drives considerable. The 530N desktop is priced at $ 499, the 1420N Notebook Laptops for $ 729 This year's theme in laptops seems to be lighter, smaller and cheaper. The added cost of Windows makes it more difficult to break in the range of less than $ 500. Linux, royalty-free per device, is proving to be popular among manufacturers and consumers aware of their budget. Everex Cloudbook A small portable 2 pounds powered by gOS Rocket Linux operating system. The Everex CloudBook packs a lot into its diminutive 9 inches. Pre-loaded with Firefox, Skype, OpenOffice and network focused on the tasks of Gmail, Wikipedia, Facebook, Youtube and Blogger. With it's built on 802.11, 1.2g Via processor, 512 MB RAM, 30 Gigabit hard drive, card reader and webcam, you should be all you need, anywhere. From $ 399, hope to see you flying off the shelves at your local Wal Mart in late January. Asus EeePC Asus eeePC launched in the last quarter of 2007 to a market hungry for a low-cost laptop. At CES this year was more eeePCs in the hands of reporters at the ASUS booth. Sporting 2 GB solid state drive or a 4 GB and a custom operating system Xandros, the eeePC comes in a rainbow of colors. Asus is set to make record sales with this ultra portable laptop for $ 399. OLPC XO laptop redesign from the beginning, the One Laptop Per Child made headlines in 2007 for his humanitarian efforts. The XO sports a unique dual-mode display rotating flash-based storage and custom Red Hat operating system. Fully rugged and splashproof, the XO can survive anything a child can throw at it. Recently the foundation has announced its intention to release the XO for the U.S. market in a manner similar to his international work, selling the system to state governments for distribution to school children. Zonbu Zonbu mini laptops and is a company testing a new business model. The zero maintenance contract available for both the laptop and a mini Zonbu, reduces the initial cost with a $ 14.95 monthly fee for upgrades and free replacement warranty. Zonbu offers a notebook for $ 279 with a subscription or $ 479 without. The Zonbu MiniPC is smaller than a Mac Mini measuring less than 5 inches by 7 inches tall and slightly over 2 inches. Using Flash 4 GB for compact storage + 50 GB of online storage means no moving parts, so the mini very lasting effect. The mini is available for just $ 99 with payment and $ 299 without. Tablets and UMPCs UMPC E-Lead Noahpad demonstrated its unique Noahpad UMPC at CES this year. Avoiding the traditional keyboard uses two touch screens Noahpad as a keyboard. With a screen that folds into 360 degrees, allowing you to "write" with the screen up and the keys in the back. In less than 2 pounds Noahpad manages to include a complete operating system Ubuntu, a low power Via 1Ghz CPU, 512 MB RAM, 30 GB hard drive, integrated WiFi, SD card reader and webcam . Nokia N810 The third generation of Nokia Internet Tablet line, the $ 459 N810 offers improvements in speed, storage and new applications over its predecessors. Nokia also added a full QWERTY keyboard in great demand. Perfect for surfing the web wirelessly, listen to music or making VoIP phone, the N810 is full of open source goodness. OpenMoko mobile phones The idea of ??a phone with a user can modify the firmware is alien to most cellular phone manufacturers. But OpenMoko is a normal cellular phone maker, a subsidiary of CIE, OpenMoko phones have been designed to be tinkered with. The first product launched, the Neo 1973 has a VGA touchscreen of 2.8 inches. MicroSD slot, USB and tri-band GSM and is available now. Unveiled at CES this year, the Neo FreeRunner, GPS and Wi-Fi adds features, is expected to be released in spring 2008. Mototrola New Motorola Rokr E8 Rokr E8, a quad-band GSM / GPRS phone was introsuced also in the 2008 Consumer Electronics Show. Joining already extensive line of Motorola Linux-based phone, the Rokr E8 is equipped with a 2 megapixel camera, a music player with multiple codecs, HTML web browser, a transformation from a single user interface. Google Android The technology giant Google has never been afraid to rock the boat. Google has now set its sites on disrupting the mobile world. The construction of a new mobile phone battery completely out of open source software and training of the Open Handset Alliance (OHA), Google hopes to open the mobile stage your average hacker. Google delivered the software development kit to the world in December 2007. You can expect members of the OHA Sprint, Motorola, T-Mobile and others to start the deployment of phones and devices running the Android platform in 2008. One of the biggest advantages of Linux is its ability to function in a wide variety of hardware and be modified to fit almost any task imaginable. Everything from company servers, desktop PCs, routers, and media players all the way to electronic picture frames and GPS units. This is only a sample of the power devices of Linux that you can expect from this year, many of whom will not even realize that Linux under the hood.

Fact Sheet on Linux Firewall Builder

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Oct 212011
 

Firewall Builder is a firewall management and graphical configuration tool that supports many open source platforms, Cisco IOS firewall. Firewall Builder is mostly used Linux operating systems. This tutorial shows you how to use objects in the object interface firewall interface Builder.Interface objects are used by firewalls to accommodate objects and can not exist alone. The dialog box specific to the interface object that belongs to the firewall can be described in several parameters. Here is a list of these categories: Name – The name of the object of the interface must match the name of the interface of the firewall machine represents.Management – If a firewall has multiple network interfaces, one of them must be assigned to management "interface", which is used for all communication between Firewall Builder and specific firewall.Label – This field is not used, but it serves the purpose of an interface description label.Unprotected: an interface that is not to assign any access lists or firewall rules. External Interface: Assign an interface that connects directly to the interface Internet.Regular – This option is used when the interface has an IP address assigned to it.Address dynamically allocated – Unlike the normal interface, this option is used when the interface has a dynamic Puerto address.Bridge – Use this option for a bridge port interface firewall.Unnumbered – Use this option if the interface and you can not have an IP address.Security level – This option is self-explanatory it. The security level can be set to external, internal, or have a numeric value between 0 and Zone 100.Network – This option is used to establish the zone Cisco PIX network. The dropdown list shows all current network objects. The user will then have the option of choosing one of these network objects to the order of the compiler that refers to the network can be reached.Assigning Use Policy Rules ObjectYou interface can use the object interface to assign the rules of policy. For example, you can drag and drop or copy and objects beyond the interface to the policy column for the firewall rules match. You can also use the interface object with dynamic addresses in the rules of politics. When an interface has a dynamically assigned address, this means that the address is unknown to the compiler Firewall Builder policy when the configuration script is generated. The compiler uses the features of the firewall order to solve this problem.

Technosaur: One Who Grew Up Before the Age of Computers

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Oct 132011
 

“My daughter knows more about than I do, and she’s three and a half.” (Quote from Video Professor late-night infomercial.) I grew up in an age before there were blackberries, ipods, computers, cell phones, video games, CD’s, satellite TV, and on-board navigation systems. As a kid I was shocked to find out that my grandparents only had a radio and a record player. The needle on the record player resembled something that you would use to sew your jeans and the 78’s (records) were made of this hard and extremely brittle type of Bakelite that would shatter if you so much as looked at it. 

Our TV’s were black and white and filled with things called vacuum tubes. The tubes would burn out and you opened the back of the set, pulled the tube out of its socket, then took it down to the local Seven-11 and tested it on a machine. Fresh tubes were stored in a cabinet underneath. I remember when our next-door neighbors got the first color on the block. Everybody gathered around and wondered at how blue the sky looked on Bonanza. I then realized that Batman’s costume was gray and Mr. Spock’s uniform was a different color from Captain Kirk’s. 

For $9.95 you could buy a sheet of plastic that would transform your black and white TV into a color set. The plastic had three different colors on it. You unrolled it and placed it over the screen. The colors were all wrong but at least you HAD color. A few years later they came out with a new technological improvement to the plastic. If you wanted a big screen, you purchased this thing that looked like a huge magnifier glass that would actually project the picture onto your living room wall. The only trouble was you had to turn the television upside down to get the picture right side up. The resulting image was big, but very blurry, and I’m sure being upside down didn’t help the TV set very much either.

The radios in the house were large and tube-type, just like the TV’s. Portable transistor radios were small and tinny and most of them just got AM. I remember that a lot of people carried them to the ballpark to listen to the broadcast by Harry Carey and Jack Buck WHILE they watched the game. Strange. The first job I had required the use of an adding machine. There were no calculators. It was electric, but you could not really do any sort of math on it, just add and subtract. An old manual Underwood typewriter handled all of your legal correspondence and some of the homework. 

Research at the library was done with microfiche and the used a roller thingie with purple ink to make copies. (I forget what it’s called.) Oh, and if you wanted to use the telephone, you had to wait your turn on the celebration line before you stuck your fingers in the holes and dialed; no buttons. It was hard to listen to music on the thing but you could call dial-a-prayer. The only way that you could text message was to learn Morris code and tap out the message on the receiver hook. Man, it was rough. A teenager the other day told me that they had never even seen a vinyl record. Geez, I think getting old.

Looks with Android

 Technology Blog  Comments Off on Looks with Android
Oct 112011
 

As you can see, attracting a girl is becoming attractive. Don’t get the idea wrong, it has NOTHING to do with your looks. It’s about your personality and the way you present yourself. I’ll guide you through steps which needs to be done to become attractive.

Warm up your brain, prepare a pen and paper and commit to yourself that you will participate with the exercises. Ready?

How to Attract a Girl: Get Rid of the Wrong Beliefs Most of us have wrong beliefs or assumptions about the attraction or what girls want. It’s not important, if those beliefs or assumptions are because of our moms, a relationship between our parents, bad experience with exgirlfriend, movies, recent society, media etc. You can be sure that things don’t have to be as you think they are.

I want you to open your mind to new things, concepts and realizations. You need to be aware of the fact that girls think and act differently than guys. Stop assuming, learn how girls really work and then act based on that.

Girls Are Attracted Only to Handsome Guys False. Don’t be as the rest of 85% guys who think you have to be handsome, otherwise you won’t attract girls. You can bet handsome guys have easier life when it comes to meeting girls, but looks isn’t the magic attraction button.

We choose girls just by looks, it’s our measurement of beauty. Girls are attracted to a whole integrity (personality, character) of guys. That’s exactly why you hear a lot from girls “Just be yourself”. Do not pretend you’re someone else, girls will notice that, because they’re excellent readers of body language.

How to attract a girl even if you are not Brad Pitt?

  • creativity
  • humor
  • selfrespect
  • intelligence
  • ambition
  • drive
  • confidence

Have you ever seen a beautiful girl with a not good-looking guy? I can smell you have. I’m even sure you have seen so many beautiful girls with not good-looking guys. How is that possible? It’s simple, those guys have a good personality and they just naturally attract girls, who are attracted to character, not to looks.

If you haven’t seen a beautiful girl with a not good-looking guy, next time you are out, look around for beautiful girls and notice how many of them have good looking or not good looking guys.

Now, let’s digg deeper for each of those qualities:

Creativity – you don’t need to be an artist, but you need to be able to deal with normal daily situations. I’ll give you an example. Let’s imagine a guy and a girl on a first date. They just left a coffee shop.

Discussion no. 1

girl: “So, what are we gonna do now?”

guy: “I don’t know. What would you like to do?”

Dialog no. 2

girl: “So, what are we gonna do now?”

guy: “Hey, I know about terrific place where we can borrow ice-skates and have fun. Are you in?”

In which dialogue was the guy more attractive to the girl? Do I have to ask? It’s because he knows what are the options, he knows how to handle the situation and he makes the decisions, so she doesn’t have to.

I know what I’m talking about, I used to be the I-don’t-know guy and it cost me 3 wonderful relationships – the girls just couldn’t handle it.

Humor – again, you don’t need to be Jerry Seinfeld or Eddie Izzard. The world doesn’t end if you don’t have a sense of humor, as long as you are commited to develop it! Hang out with guys, who are funny (this is huge!). Watch funny tv shows, soak the humor (any known stand up comedian, Friends, How I Met Your Mother, Jerry Seinfeld, Fresh Prince,…).

You need to develop a humor. Which guy a girl would pick – the one with a humor or the one without a humor?

Humor is not about delivering jokes, girls are not interested in jokes as much as guys are. Your sense of humor has another meaning for girls. In other words, you need to learn to not take yourself too seriously.

Selfrespect – stop feeling sorry for yourself. You are a man and you are responsible for your actions, nobody else.

How well do you know yourself? How much time you spend alone, letting your thoughts just flying in your mind? How much do you think about yourself in order to get to know yourself better?

This is not a narcism, this is about knowing your real you, without any excuses or apologies, the raw you and the things you really want/like or don’t want/like. Both of those things are extremely important, because by clarifying what you want and what you don’t, you are creating your boundaries, which form your character.

Notice the difference of the following question of a guy who

Question no. 1

guy: “… would you go out with a guy like me… sometimes…. maybe?”

Question no. 2

guy: “Listen, I like your energy and want to know you better. What is better for you – thursday night or friday night?”

Intelligence – again, you don’t need to be DaVinci or Einstein. This intelligence has nothing to do with your IQ. This is about being not stupid, receptive to new ideas, opened to discussion, aware of things around you.

It’s good to have some overview of the world, but you don’t have to memorize things (like who was a prime minister of Yemen in 1993). Do you know where is the difference between somebody who is a walking encyclopedia (remembers everything about everything) and a laid back guy from this century? 2 minutes! Human’s brain has its limits. It’s more important to know where to find the information you need. And today the internet is just a priceless tool! Einstein has been asked if he knows the relationship between kilometer and mile. He replied: “I don’t know. I don’t want to waste my brain capacity on something that can be found in every second book.”

Your brain is like a muscle – the more you use it, the more stronger it gets (and it works in both directions, so make sure to practice).

Ambition – again, you don’t have to have ambition like Hitler. It’s important that you have some bigger goal than move from your mom before you turn 45. You are a man and you want to realize yourself. You want to leave a footprint of your living on the Earth. And no, a footprint of your ass in a chair in front of your tv doesn’t count!

Ambitions relate to your list of things you want. If you think of yourself as a race driver in WRC, terrific. But work on that. This is not gonna happen if you’re sitting at home in that dammed chair.

Drive – it’s fine to have ambitions, but if you have nothing that motivates you to achieve your goals, you are doomed not reaching your goals. You need to find a motivation. Something, that will juice you in achieving your goals.

Confidence – so you are creative, you have a sense of humor (and you are not afraid to use it!), you have a selfrespect, you are intelligent, you have ambitions and you have a drive. By having that you must have gained a confidence as well, because if you really did the exercises and has worked with your personality for a while, you must feel the change and that change must juice you with the power of energy – confidence.

When a Girl Rejects You, The Life Ends No. If it did, there wouldn’t be any guy left. You need to think of a rejection as a energy drink or a time management tool. I’ll explain those 3 ideas to help you understand what is possible if you reframe a situation and instead of suffering you actually gain something.

Reframe #1: Rejection is an energy drink

Do you know the old saying What doesn’t kill you makes you stronger? I’m sure you do. There you go. You can be sure that the fastest way to overcome your fear is right through. Each rejection becomes less important to you and because of that you naturally change your attitude and the fact that the world doesn’t stop for you whether a girl rejects you or not actually makes you more attractive to girls.

Reframe #2: Rejection is a time management tool

Imagine you approach a girl you are attracted to, you talk for an hour, but during the hour you would find out the girl is not attracted to you. By her telling you she is not attracted, she just saved time and energy for both of you. Awesome, isn’t it?

Reframe #3: Rejection isn’t about you

You need to keep this in mind. If you get rejected from a girl, it’s her problem, not yours. There could be hundreds of reasons for her rejecting you. Don’t let it bother you.

Have you ever had a bad morning and the rest of the day was just rubbish? Has someone in the bus made you feel worse? Have you forgotten to do the laundry? Do you prefer long or short hair? See? That’s how the life goes. Guess what, even the most beautiful girl is still a human!

Don’t forget there are more girls than guys. So move on to another girl who is smiling at you.

Android 2.2 (also known as Froyo) operating system is out, and although the changes are not convincing, there are some very cool new features worth mentioning. 1. Speed ??Dalvik VM: Just-In-Time (JIT) = 2 and 5 times faster performance.2. API & Services – Cloud Messaging.3 devices. Browser-V8 = 2-3 times faster JavaScript rendering.4. Android Market – Auto Update, and all errors, Report.Probably applications, the most exciting features is the support Froyo Flash Player 10.1. Flash Lite is available in other phones, but is shrinking in comparison with Flash 10. Videos were impossible to see and most games are unplayable. Flash 10 is committed to using a piece of Flash Lite’s memory and hardware acceleration is used to make films and games run smoothly and polished.Another interesting feature is the addition of shortcuts and the phone’s browser screen, something that was not available in version 2.1. A new JavaScript engine will increase browsing speeds up to 2 to 3 times faster. In addition to the photo gallery is dressed, you can now share its 3G internet connection with your laptop via Wi-Fi.Concurrently, a new voice recognition can identify phrases and immediately complicated the search for any word you speak. It also works for voice dialing, deftly opening the scoring, and web applications accessible via API (an interface that implements a software program to allow other software to interact with it). A new version of the web is available Android store where you can buy online applications and make it transmits wirelessly to your phone. An “Update All” option is also available in the Android Market will automatically update their applications. Application Error Reporting that provide application developers and freeze accident reports submitted by users. These reports will be available to developers through the Android Market account.Is editorial this enough for an upgrade so you can go from 2.1 to 2.2 Android? I think so.Aron Bryant, www.helablog.com. A look at the negative trends of today’s hottest and Technologies

Dynamic current sharing of high power IGBT

 PCIM  Comments Off on Dynamic current sharing of high power IGBT
Oct 072011
 

In this paper, the dynamic behaviour of high power IGBT’s in parallel, the IGBT parameters influencing paralleling and other external parameter which are influential are discussed. Experimental results showing dynamic current sharing behaviour of IGBT’s under single gate driver operation, under multiple gate driver operation, with different gate cable lengths for IGBT driving, with external induced magnetic field etc are shared in this paper. Different mechanical setup of the DC/AC busbar’s are made to show the effect of the symmetrical commutation loop resistance & inductance on current sharing in paralleled IGBT’s. To generate an overview of this stylish 6.5kV IGBT computer circuit and its goodness for adhesive friction program. The activity of commanding businessman MOSFET and IGBTs in point in time king score applications can be compromised by electrical incomprehensibility that corrupts the ply semiconductor’s force signals. This product will supply techniques that can change state the public modality and differential gear grammatical relation human action of might MOSFET and IGBTs dynamical circuitry. It will saucer optimizing the throttle drive’s auditory sensation waiver by victimization optically joined MOSFET drivers. The publishing firm will also garb sources of green way noise, and methods to ameliorate sound rejection. It presents diode programme electronic equipment which enhances the driver’s go immunity. in conclusion loss dissonance status of the optocoupler’s aid man of affairs activity will be covered.

PCIM 2011

 PCIM  Comments Off on PCIM 2011
Oct 072011
 

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