Power solar cars

Filed under: Online Technology Resources, Sorcery World, Streets + Wheels — admin at 5:55 pm on Wednesday, July 30, 2008

The drawback of the solar cars available today are that they are small in size as they cannot take more than one person, they are slow and due to there small size they cannot compete with the commercial cars. But these factors won’t be a trouble for a longer period of time as big companies has also started to take interest into alternative sources of energy that can run cars. As time will progress so will the system integrated into these solar cars. In the coming future these cars will be bigger in size and take more the two people in them. The solar arrays will also evolve with the passage of time providing you with electric energy that can run for much longer period of time.

Today the solar cars are used for the purpose of demonstration of future technology. Even the governments have started to take interest in these projects and provide funding for the events that holds races of solar powered cars. Initially teams from different universities used to enter these kind of races and bring there models of solar powered cars but that’s the past now and these days even big corporations have started to enter these competitions to demonstrate there own buildings. Solar power cars will be the future and the alternative of gasoline.

Not Long Before We See Sleek And Weightless Gaming Laptops

Filed under: Online Technology Resources — admin at 11:47 am on Sunday, June 29, 2008

Do all of us really require a laptop? It surely looks that way because demand is soaring. I just scared that like last year we will have delays getting our hands on the latest technology too. I think the unfortunate thing for manufacturers is that it doesn’t look like any factor will slow this demand for laptops. This is a business that is searching to better on numerous things all at once so new directions and excitement is created all the time.

Gaming notebooks are one of the sectors that have seen growing interest. Good gaming notebooks can be brought pretty cheap for medium gaming requirements. I feel notebooks are a good option for playing games. Maybe not exactly for the extreme but they’re great for the large number of us. Nowadays the majority of gaming notebooks are not even big, bulky and loud. Ok so there still is a gap in speed no matter how great gaming notebooks have become but that should always remain. Gaming notebooks are the gauge of speed for the notebook computer industry and it will be interesting to see how the approaching technology fairs.

Speaking of gaming notebooks, the greater alternatives are available when they are custom built. With custom built notebooks you usually get to find what brand of components is going into the system. In my mind being able to choose the cpu, ram and storage is most catered for the more power hungry people out there. The large number of laptops are designed for the average consumer which means you may not find what you’re searching for. Power users require custom notebooks for this reason. I feel you also get superior customer service when buying a custom notebooks. I positiviley feel this is a main factor that goes in favour for buying a notebook thats built to .

I’m really awaiting to see what notebook computers come to market in the future. Internet devices look to be an evolving niche as of now. Clearly this will be something massive in rising markets. Supremely everyone would desire an ultraslim notebook with a 15″ screen. Stronger enclosures required for such notebooks are still too expensive. Companies are encasing increaed performance into notebook computers and it looks like gaming notebooks will get slimmer and lightweight. There’s no telling what innovation’s we’ll see but no doubt there will be numerous.

Rizeon have a few of the best laptop computers at present.

Sandblast Your Way Through It All

Filed under: Online Technology Resources — admin at 2:36 pm on Tuesday, May 27, 2008

Sandblast is a process wherein a stream of sand is driven by a
jet of compressed air or by water against a surface. This
creates a powerful abrasive action that can clean and abrade any
surface put under the jet of these abrasive particles.

Abundant materials such as powdered quartz, emery, and iron
globules are usually used as the abrasive materials in
sandblast.

Sandblast is widely used for cleaning casting iron at foundries.
Sandblast is also used for preparing different surfaces for
painting, enameling and during galvanizing. Sandblast can also
be used in cleaning stubborn grime that has accumulated in the
stonework of most buildings.

Sandblast can also be used to create frosted designs on glass by
placing a suitable stencil or pattern over a plate of glass and
applied with a little sandblast. The jet of abrasive particles
of the sandblast will strike the uncovered portions of the plate
glass and create that frosted effect.

A sandblast operation can sometimes be a toxic undertaking.
Sandblast operators can be exposed to several harmful particles
such as lead or zinc that are important components of most
commercial surface coatings.

Sandblast operators can also be exposed to the hazards of the
abrasive particles being used. Without the proper safety
equipment like goggles to cover the eyes and suitable protective
clothing to shield against the flying particles, the sandblast
operator and crew will be dangerously exposed to possible
injury.

That is why there are several safety regulations to be followed
before any sandblast operations.

Sandblast operators should use a standard issue air breathing
apparatus while operating the machine. This will insure that the
sandblast operator will have a steady supply of clean air supply
amidst the workplace that will be filled with air contaminants
during operation.

It is also important to consider that the hoses as well as the
other equipment used to give the air supply to the sandblast
operator should be able to deliver clean and contaminant-free
air.

After operation, sandblast crew should only remove their air
breathing apparatus when they are well away from the workplace.
The sandblast particles can remain suspended in the air for long
periods even after the operation.

It is also necessary for sandblast operators to wear coveralls
that will provide suitable protection against rebounding
abrasives during the operation of the sandblast.

Work gloves must also be used to protect the full forearm. Sand
blast operators must also be able to wear the appropriate safety
footwear.

It is also important to carry out the sandblasting operations in
an area where the abrasive materials and other possible
contaminants are safely contained and will poser no threat to
other workers or to the public.

There are also some precautions that are to be observed when it
comes to the sandblast machine. The sandblast pot where the
abrasive particles are placed should be well grounded at all
times.

It also must be provided with a safety shut down feature to
further protect the sandblast operator. It is also important to
remember to turn off the sandblast pot first while filling it
with the abrasive particles to prevent accidents from happening.

The entire sandblast unit should be thoroughly inspected for
possible defects before it is to be used. Sandblast nozzles
should also be equipped with a safety control switch that will
enable the operator to control the sandblast at the nozzle.

Following these simple tips will ensure the crew with a
trouble-free sandblast operation.

Cartridges - Make Printing Reliable And Easy

Filed under: Online Technology Resources — admin at 1:46 am on Sunday, May 18, 2008

With the introduction of printing ink cartridge in 1984, the task of printing has become more easy and reliable. Previously to 1984, ink delivery systems were used, which involved it’s own inconveniences. With world advancing everyday, now the printing industries have developed new ink delivery technique that includes black and white documents as well as color graphics and photos printing.

With the invention of printing cartridge, it is very easy to print on different sizes and types of papers, fabrics and films. These printers were used in schools, business showrooms and even for homely purposes. When printing cartridge is used, each cartridge is given its specific identifying number and lists of model number of each printer in which the cartridge can be used.

Types of refilled printing cartridges

There are two types of refilled cartridges that are used in homes and offices:

Remanufactured cartridge - this is an original printer ink cartridge that is outfitted with ink and new parts. It is tested before it is being placed in the market to be re-sold. The life span of this cartridge is same as the original and they can be safely used in all the printers.

Compatible cartridge - it is a type of cartridge that is built with the same specifications as those of an original manufacturer but is available as generally cheaper than the original.

These printing cartridges come in kits that include bottles of ink, a bottle of cleaning solutions, a 2-part syringe and user’s manuals.

How to refill your cartridges?

Cartridges can be filled in the printer in two possible ways. You can either refill with low-priced kits that allow you to refill your own cartridge.

You can buy a refilled cartridge from a manufacturer and include methods like drilling, filling and sealing an empty cartridge.

Follow these instructions while you are refilling your cartridges:

- From the re-fill kit, draw the ink of any color with syringes and pour only after checking how much ink should be injected into the cartridge

- Make a small hole on the top of the cartridge for each individual color chamber. The hole should be on top of the cartridge just near the label and ink should be pushed onto the hole, while injecting the ink slowly into the cartridge.

- The re-filling holes need not be sealed, as there are already breather holes on top of the cartridge.

- After re-filling is over, place back the cartridge in the printer and run the cleaning cycle for at least 1 to 3 times.

- If any ink is left in the syringe, then you should return it to the bottle. Then clean the syringe with water and dry it before using it for some other color.

You should always remember to refill the cartridge before it is completely empty. Buy in bulk to get the printing cartridges at discounted prices.

Sharon Albright is the owner of Cartridges Site. Read more articles on Cartridges and visit her recommended resources.

The Importance Of Current Sense Resistor In Switch Mode Power Supply

Filed under: Online Technology Resources — admin at 12:35 pm on Monday, May 12, 2008

Current sense resistor is usually located in the switch mode
power supply section. Newer version of monitor-the b+ (boost)
circuit also have this current sense resistor. If you repair
electronic equipment especially the switch mode power supplies,
the current sensing resistor is connected to the source pin of
power FET (field effect transistor) and the other end to HOT
GROUND. The value of current sense resistor is in the range of
0.1 ohm to about 1 ohm. The values are depends on the design of
each power supply.

In monitor power supply where pulse width modulation (pwm) ic
UC3842 are used. Pin 3 of this power ic is called I-sense which
means current sense and this pin is connected to source pin of
POWER FET. The purpose of this current sense circuit is for
overcurrent protection. This circuit usually samples the voltage
drop across a resistor in series with the switching fet
transistor. If the current rises abnormally due to some short
citcuit in the secondary side such as a shorted secondary diode
or horizontal output transistor (HOT), the voltage will exceed a
reference level and shutdown the pulse generator which is the
PWM ic. This circuit provides protection to components in the
event a problem occurs. In some cases where overload happen-the
power section will blow and most of the time the components
changed are fuse, power fet, pwm ic, zener diode and current
sense resistor.

Do you know that a small change in this current sense resistor
value have a great impact on the secondary output? A little
change in value say from 0.22 ohm to 0.44 ohm can caused your
ouput voltage to drop into half! I have seen a lot of repairer
can’t detect this type of problem (low output voltage) due to
that they used analog or digital meter that don’t have the low
ohms range. You can’t differentiate if the low ohms resistor has
its value changed by using normal meters. I personally use the
Dick Smith ESR Meter which have the capabilities to check
resistor value down to 0.01 ohm! If you don’t have this special
meter you may just direct replace the current sense resistor to
see if the generated secondary output will back to normal
voltage.

Another tip is that if the current sense resistor in the monitor
B+ circuit have changed value it will caused the output in the
boost circuit to become low and you will have a small width
display and of course the high voltage will become low as well.
Instead of 24Kv it becomes 15-18Kv.

How Biometric Technology is Used in Video Surveillance

Filed under: Online Technology Resources — admin at 11:52 pm on Friday, May 9, 2008

As the recent July 7th London bombings would reveal, biometric technology images from over 200,000 video surveillance cameras are key weapons against the terrorists. What makes these biometric cameras so extraordinary is that these cameras have a 360-spherical lens, called a fisheye, to follow someone’s movements and the camera’s computers can be programmed to identify particular faces from a database.

The fisheye and other security solutions are manufactured by Ipix Corporation, which provides governments and large firms with the latest video surveillance technologies. Says Ipix president, Clara Conti, “These cameras don’t have any blind spots. Fixed cameras have blind spots.” These cameras capture the biometric facial recognition data needed to identify suspects and solve crimes.

What is biometrics?

Biometrics is a field of technology that uses automated methods for identifying or verifying a subject based on a physiological or behavioral characteristic. Among the features measured are the face, fingerprints, hand geometry, handwriting, iris, retinal, and voice. The individual’s characteristics are then compared to other individuals stored on biometric templates within a database. If there is correlation between the template and the subject, a high score would be generated and the authorities alerted. Using biometric technologies to identify the bombers’ faces is an accurate and cutting-edge solution.

A4Vision Inc, a 3-D facial imaging products and technology manufacturer, transfers barely-visible infrared light onto a subject’s face to determine its facial contours from the light pattern. Another manufacturer, Geometrix, combines two or more cameras to build a 3-D shape via triangulation. Its ActiveFusion surveillance technology blends 3-D face, 2-D face, and fingerprint biometrics to claim submillimeter accuracy.

Both of these companies’ systems need high resolution cameras to achieve the results expected and they work best when the subject is a few feet away from the video cameras. Although a poor image can reduce the effectiveness of the camera’s work, a great deal is being done in this technological field to standardize image quality, and improve the quality and size of the biometric template database.

How to evaluate these biometric solutions

Although evaluation techniques for biometric solutions are not standardized, research enterprises and commercial firms are encouraged to take the Face Recognition Vendor Tests (FRVT). The FRVT will perform tests on all of the databases in order to achieve an objective and fair comparison among the vendors. These evaluations will provide the U.S. Government and law enforcement agencies with information to determining where and how facial identification technology can best be deployed. In addition, FRVT results will help identify future research directions for professionals in the video surveillance and biometric field.

Biometric technologies are the foundation of a new identification solution for video surveillance. As terrorism threat increases, more businesses and governments are turning to biometrics to quickly resolve security issues to make their employees and citizens safer.

Copyright © 2005 Evaluseek Publishing.

About the Author

Alice Osborn is a successful freelance writer providing practical information and advice about everything related to CCTV systems and related topics. Her numerous articles include tips for saving both time and money when shopping for video security products; equipment reviews and reports; and other valuable insights. Learn how to record your CCTV system footage using a digital video recorder server or DVR software when you visit Video-Surveillance-Guide.com today!

Nine Rules for Avoiding Computer Viruses

Filed under: Online Technology Resources — admin at 7:07 pm on Saturday, April 26, 2008

If you’re seriously interested in knowing about computer
viruses, you need to think beyond the basics. This informative
article takes a closer look at things you need to know about
computer viruses.

A virus is a program - a piece of executable code - that has the
possibly of cloning itself. Computer viruses can spread fast and
they are hard to eradicate. They can be attached to any type of
file and they are spread as files copied and sent from person to
person. They can be contacted from a floppy disk or Cd, they can
be launched when opening a program or accessing a file, any
file, or they can be brought from the internet by downloading a
file or accessing a web page and as attachments to e-mails.

Besides replication, some viruses have something else in common:
their infecting routine. The behaviors of viruses vary from
showing messages or images to destroying files, formatting the
hard disk drive and other severe damage. If the virus does not
inflict damage it can still cause problems by taking up space
and memory, lowering the performances of the computer.

Nine rules for avoiding computer viruses would be:

If you find yourself confused by what you’ve read to this point,
don’t despair. Everything should be crystal clear by the time
you finish.

1. Use an anti virus program at all times. 2. Install and keep
active a firewall. 3. Make sure your system is up-to-date with
all the existent updates. 4. Keep your browsers security
settings at maximum. 5. Never click yes when your browser asks
you if you want to install or open some content coming from an
organization you don’t know or don’t trust. 6. Install an
anti-spy ware program to enlarge the protection. 7. Never
install a browser help or search bar accepting the times it
comes from a reliable source. 8. Use a different credit card for
online shopping. 9. Don’t click on email attachments that are
executable files even if they look as if sent from known persons.

The antivirus programs have a big role in providing your
computers security and protecting it from viruses, worms, Trojan
horses and other “invaders” that can attack a computer. The role
of an antivirus program is to detect the presence of viruses in
a computer, to disinfect the files or delete the ones that can’t
be disinfected and prevent the contamination of the computer.

Most of the companies that produce antivirus have online free
tools for scanning computers for viruses. If you don’t have an
antivirus yet and can’t decide which one to buy you can enter
their online sites and try the services for free, then decide
what to use.

That’s how things stand right now. Keep in mind that any subject
can change over time, so be sure you keep up with the latest
computer virus news.

Make Your Own Ebook… It’s Fast, Easy, And Free

Filed under: Online Technology Resources — admin at 8:37 pm on Tuesday, April 1, 2008

Yes, there is a way to create your own pdf ebooks for free, and it is a lot easier than you might immagine. In fact, it is so simple that I am going to explain the whole process, right now in this small article. You ready? Good, cause here we go…

Open up the content you want turned into a pdf file, or just copy and paste your content into Microsoft Word. If you don’t have Word, you can use a plain text editor such as Wordpad or Notepad.

Open up an e-book that you have that was written by someone you know and trust. Using this as a general reference, resize the font of your heading. Then go on to do the same with the body of your content.

Now change the font of any links you might have to “underlined” and “blue”, this way people will know they are links and will click on them. I will explain this in just a minute.

Next, you need to click “file” then “print preview”. Take a look at what your pages look like. Your e-book will be created using a free printer driver, so the “print preview” is what your e-book will actually look like.

At the bottom of every page, you are going to want to put a small, one-line note… ie:

© 2005 Your Name Here www.yoursitehere.com

Also, make sure you have the link to your site blue and underlined too. This will help plaster your name and website all over the Internet, and as I will explain, will allow those interested to just click their way to it.

Now you will need a free piece of software called pdf995. Get it at www.pdf995.com. While you are there, also download the free converter, pdfedit995 and signature995.

Open the pdf995 file you just saved, and it will guide you through the installation process. If your system requires, you might need to open the pdf 995 converter first. Either way, when it is installed, you will be sent to a welcome page that says “setup has successfully installed the pdf995 printer on your system”.

Open up your content, if you don’t have it open already, and click “file” then “print preview again. When you are sure everything looks good, click “print”, then select “pdf995″ as the device to print with, and follow the instructions to save your new pdf document to your computer.

Now make a list of each link in your content, then go and open the pdfedit995 file you downloaded. You will need this to make your links active. Once you open this file, it will guide you through the installation process. When it is installed, you will be able to access it through your start bar, and then clicking on “programs” then “software995″ then “pdfedit995″.

When you have it opened, click the tab that says “links”, and then enter the text that you want to turn into a link in the first box, and the actual url of the site you want it to link to in the second box, then click the box to the right that says “convert this text to a link”. For example, if you want the words in your content that says “click here” to link to your website, you would enter “click here”, without the quotation marks, in the first box, and then enter “http://www.yoursite.com”, again without quotation marks in the second box. Then click the “convert” box to the right.

Do the same thing with each of your links, and when you are done, you can go ahead and close the software. Just a note to keep in mind… pdfedit995 will be making the changes to the last pdf file you created with pdf995, so make sure the one you are trying to set-up the links with is the last pdf file you created.

And that’s all there is to it! Now you can use Signature995 to make your pdf more secure. It’s just as easy to use as their other free products.

About the Author: Like this article? For more highly informative articles from Matthew Keith, join his free newsletter at: http://www.dogsnoop.com/newsletter.html

Source: www.isnare.com

Film vs Digital

Filed under: Online Technology Resources — admin at 10:21 pm on Sunday, March 30, 2008

Film vs Digital

I was reading a piece the other day, written by a photographer
who offers both film and digital capture to his customers. I am
always interested to hear other professional photographer’s
opinions on the subject. I was a film devotee for over 30 years,
and only made the switch to digital a little over three years
ago.

In the piece I mentioned, the photographer/author sited the fact
that film is more ‘forgiving’ than digital when it comes to
proper exposure. This is certainly true. Especially in the
highlights of the image. You can overexpose negative film by
more than two stops, and still get details in the highlights.

For those of you who aren’t familiar with photo-geek speak, for
any given scene framed in the viewfinder of a camera, there is a
correct exposure to the light coming from the scene and onto the
film, or digital sensor. Over exposure by one “stop” means twice
as much light as should be getting to the film or sensor, is
getting to it. Two stops over is twice that much more, or four
times the amount of light as the correct exposure.

Do that to your digital capture and there’s no recovering data
from the highlights. Sorry, it’s gone! Actually, positive film,
or “slide” film also has a much lower tolerance to overexposure,
so not all film is that much more ‘forgiving’. But the point
here is… ta DA…”Forgiving”, (and may I finish the thought),
of bad exposure!

The author of the piece I refer to here also is a photographer
in Hawaii, as I am. He writes of how the light here changes so
quickly and frequently with the trade winds blowing the clouds
over the sun, then away from the sun, etc. And it is true that
on many days, especially in the earlier afternoons the
brightness and intensity of the sun can vary quite a bit.

Personally, my solution is, knowing that about the light and the
sun, clouds and trades, 1) be aware of it, and 2) know your
equipment so you can make rapid adjustments, and then, 3) make
the adjustments as needed!

Then there was the assertion that, “Prints made from negatives
have more ‘depth’ than prints made from digital files.”

As I mentioned, I was a film devotee for over 30 years. And I
used medium format cameras using negatives over 3 times the size
of 35mm negs. Print quality was one of the main factors that
kept me from converting to digital earlier than I did. I
insisted on seeing my own images printed digitally, that matched
the quality of the prints I was used to from my film processing
labs.

The simple truth is that prints are two-dimensional. Prints have
no depth. What creates the illusion of depth in an image are the
contrasts in the image. Shadows and highlights, perspective, and
the human mind. It is up to the photographer to shape, frame and
capture the elements that create the illusion of depth. That’s
why professional photographers create images, while others catch
snapshots.

The other evening at a meeting with some art directors, when I
was asked, “How do you feel about digital? Has the quality
caught up with film yet?” I unhesitatingly responded, “It has
caught and surpassed film!”

Of course I was speaking from the perspective of a professional
photographer. When you have a correctly exposed image, and you
use state of the art printers, you simply cannot beat digital
imaging. My big, medium format negative film prints would start
to get grainy at 30×40, but my 6 mega pixel digital images,
printed on Epson Stylus Pro printers look tack sharp at 40×55.

So, strictly on an image comparison, print to print, film and
digital, I would have to say there’s virtually no difference up
to about 16×20, or maybe 20×24. Larger than that, digital is
superior.

All this being said, visual arts are very subjective, and this
is my opinion.

Cisco CCNP / BSCI Exam Tutorial: OSPF Router Types

Filed under: Online Technology Resources — admin at 10:45 pm on Tuesday, March 18, 2008

When you’re preparing to pass the BSCI exam on the way to the coveted Cisco CCNP certification, you can be quickly overwhelmed by the sheer amount of BGP and OSPF knowledge you must demonstrate a mastery of. One set of details that some BSCI and CCNP candidates underestimate are the differences between the OSPF router types. The OSPF router types seem straightforward enough, but what you must keep in mind is that a router can fill more than one of these roles!

An OSPF Internal router has one rule - it must have all its interfaces in a single area. It does not mean that area has to be Area 0.

An OSPF Backbone router is a router with at least a single area in the OSPF backbone area, Area 0. A router can be both an Internal and Backbone router if all its interfaces are in Area 0.

An Area Border Router has at least one interface in Area 0 and another interface in a non-backbone area. ABRs are also one of two router types that can perform OSPF route summarization. (To advertise a summary route from one OSPF area to another, use the area range command on the ABR.)

Finally, an ASBR is an OSPF router that is performing route redistribution by injecting routes from another source into the OSPF domain. This is the other OSPF router type that can perform route summarization; to summarize routes being redistributed into OSPF, use the summary-address command on the ASBR.

There are several commands you can use to determine the router types in a given OSPF area. The command “show ip ospf” will display quite a bit of information regarding the local router, and this includes whether that router is acting as an ABR or ASBR. To see the routes to the ABRs and ASBRs from the local router, run “show ip ospf border-routers”.

Chris Bryant - EzineArticles Expert Author

Chris Bryant, CCIE #12933, is the owner of The Bryant Advantage, home of free CCNP and CCNA tutorials, The Ultimate CCNA Study Package, and Ultimate CCNP Study Packages.

For a FREE copy of his latest e-books, “How To Pass The CCNA” and “How To Pass The CCNP”, just visit the website! You can also get FREE CCNA and CCNP exam questions every day! Pass the BSCI exam with The Bryant Advantage!