Saturday, December 31, 2011

Light Bulbs - Choosing the Most Energy Efficient

!±8± Light Bulbs - Choosing the Most Energy Efficient

Choosing the right light isn't so easy any more! With the rapid expansion of technology, you're left with dozens of choices, ranging from fluorescent light bulbs, to halogen bulbs, to led bulbs, to the classic electric bulbs invented by Thomas Edison. It's often easy to get lost and settle for the first lights bulbs you find. The next time you're at the store, take a breath, relax, and remember that so much choice is actually a good thing.

Bulbs operate on one of several principles, and can be divided into different types of bulbs. The simplest, and most commonly used are incandescent lights. These are the classic lights we find everywhere around our home, and produce light by passing electricity through a filament, generating both heat and light. They are sometimes called ""daylight bulbs,"" because they produce a very pleasant and warm glow. Halogen bulbs work almost the same way, but are many times more efficient. The filament is encased in a special quartz container, and surrounded with a special gas that allows it to both last longer, and provide more light for the amount of energy you put into it. A 40 watt halogen light bulb may burn as brightly as a 100 watt standard bulb.

But we're getting ahead of ourselves. Take a look at any of them, and you'll probably see some numbers imprinted in the glass. This number is called the bulbs wattage, and it ranges from around 15 watts, to upwards of 10,000. The amount of the bulbs watts determines how much energy it uses. Some lights have a volt and amp measurement, which is really just a different measure of the same thing. Don't be confused when you see an ad for 12 volt light bulbs, or ""low voltage light bulbs."" You can easily figure out the wattage by multiplying the number of volts by the number of amps. For instance, 12v light bulbs that use 6 amps have 12 X 6, or 72 watts.

Another common style of bulbs are flourescent lights. These energy lights don't have a filament at all, but instead pass energy through a tube full of gas. You can see the energy building up in the tube, when you turn the light on and the compact fluorescent bulbs, bulbs flicker before turning on fully. The light emitted by fluorescent bulbs is not the same as that of full spectrum light bulbs, and it may have a cool or unnatural feeling. Still, you can run these lamps bulbs for next to nothing, and they will last for years before needing replacement. Metal halide bulbs are a special type of gas bulb that are often very powerful, and use hundreds or thousands of watts. These lamps are the projector light bulbs commonly found in industrial settings and stadiums.

With energy cost rapidly rising, many people are switching over to low energy bulbs. You can now find many types of energy saver bulbs, that will burn fairly brightly while using a fraction of the watts of standard bulbs. Although energy efficient light bulbs cost more than the ordinary kind, replacing the normal lights in your house with energy saving light bulbs will save you money in the long run. You won't need to change your bulbs as often, and you'll be helping the environment too.

Before you buy any lights online, make sure to check your lamp and verify that the wattage you are buying is the right one for your lamp. Improper wattage may be dangerous, and could potentially start a fire.


Light Bulbs - Choosing the Most Energy Efficient

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Sunday, December 25, 2011

ViewSonic PJD5123 SVGA DLP Projector 120Hz/3D Ready, 2700 Lumens, 3000:1 DCR

!±8± ViewSonic PJD5123 SVGA DLP Projector 120Hz/3D Ready, 2700 Lumens, 3000:1 DCR

Brand : ViewSonic | Rate : | Price : $329.00
Post Date : Dec 25, 2011 11:53:50 | Usually ships in 24 hours


The PJD5123 is a high-performance SVGA 800x600 DLP projector with 2700 ANSI lumens and 3000:1 contrast ratio. With new slim design at only 3.2 inch height, making it ideal to move from room to room on the campus or in the office.

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Friday, December 16, 2011

Do Top-Selling HDTVs Stand Up To Strict Scrutiny? Part 1

!±8± Do Top-Selling HDTVs Stand Up To Strict Scrutiny? Part 1

There's a mad rush on to buy HDTVs, which are amongst the hottest markets. You must be aware that television broadcasting in the United States is set to become fully high definition on February 19, 2009.

You must already be subjected to a great deal of sales spiel by persuasive marketers. This article is intended to help you sift the chaff from the grain, when you are bombarded with sales talk. I am not going to teach you all the finer technical details about HDTV; just enough to help you select the right HDTV you need, not what they want to sell you.

First, you have to decide on the kind of HDTV you want to buy. HDTVs are available in five categories: Plasma, LCD, DLP, CRT, and Rear-projection. LCDs are the most popular, followed by projection TVs and plasmas.

If You Have Enough Space And Money...

Take a look at CRT HDTVs. They are big and heavy - and the most expensive of all HDTVs - but they deliver the best image. Truly upscale.

Is There Space Shortage In Your Home?

Then you should buy either an LCD or a plasma HDTV, as these are thinner, and take up less space. LCD screens give better resolution than the other types; however, if you are a gaming fiend and love home theater, plasma screens are a better choice as they give you a larger viewing area.

Why Some Gamers Avoid Plasma...

Plasma TVs, when used by gamers for long hours at a stretch, do have burn-in problems.

Risks Involved In Buying LCD TV...

LCDs have their own negatives, too: limited viewing angles, weak fast motion, and not very deep blacks.

Do You Want To Save Money As Well As Space?

Then buy an LCD HDTV. LCDs cost less than plasma HDTVs. (However, LCDs cost more for the same size sets - this riddle is easily explained as plasma HDTVs are only in the large screen segment.) LCDs have the added advantage of consuming less electricity than plasmas, making you more environment-friendly. They are lighter too.

Do You Want A Better Image Than An LCD HDTV, Without Paying A Much Higher Price?

DLPs (Digital Light Processing) could be what you are looking for. They give better black levels and color than LCDs. Also, they are blur-free compared with LCDs.

Do You Want The Biggest Size At The Best Price?

Then opt for a rear-projection TV, which, while being heftier than a flat-screen plasma or LCD TV, is much thinner than a CRT.

Why CRT Could Be Expensive In The Long Run...

On the flipside, the bulb of the CRT will have to be replaced every few years, and that will cost you a few hundred dollars, every time. This problem has been eliminated by the recently introduced LED-driven models.

Don't Forget To Factor Repair Costs...

A prospective buyer of a HDTV must also consider how much he is likely to pay for repairs in the future. Flat-panel LCD and plasma TVs require the least repairs in the first three years of use. Rear-projection TVs are much more repair-prone than LCD and plasma sets. (Source: Consumer Reports)

Do You Really Need 1080p Sharpness & Resolution?

Sharpness and detail are defined in three separate categories: 720p, 1080 I, and 1080p, with 1080p considered the best choice.

Many prospective buyers are convinced that a 1080p set is better than a 720p one. However, there are hardly any 1080p broadcasts, so you might end up paying ,000 more, for a 1080p set that gives you the same picture quality as a 720p set. At least until 1080p broadcasts start happening.

Beware Of The 120 Hz Myth...

The refresh rate is also categorized, into 60 Hz and 120 Hz. 120 Hz is the preferred alternative, as the lower rate results in blurring or ghosting of fast moving objects. This is actually a myth, as most signals your TV receives are 60 Hz, anyway.

How Much You Pay For Your HDTV Depends On Where You Buy It...

The percentage sales of HDTVs has been increasing dramatically in recent times. You actually save money by buying your HDTV online, rather than in a store in your neighborhood. That's because this allows you to buy from sellers across the world, and avail bargain offers which would otherwise not be available to you.

Amazon is among the best, where you assured of a good price, apart from credibility and guarantee of quality. There are other online sources you can buy from, such as eBay, but where you are never sure of who you are buying from.

Have You Factored Other Costs?

When you work out how much you have to pay for your new HDTV, please insure that you factor in the need for other cables, installation costs and possible satellite or cable upgrades.

Don't Let Store Owners Fool You With "Torch Mode"...

Sets in shops are usually in "torch mode" which means they have the brightness cranked up to attract attention. So, you will have to add installation costs to get your set properly calibrated after bringing it home from the shop.

Which Brand Should You Buy?

Now that you know exactly what you want to buy, you can consider the brand alternatives. Sure, you can buy the brand you prefer. Or still better, read my brand reviews also before deciding on the brand.


Do Top-Selling HDTVs Stand Up To Strict Scrutiny? Part 1

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