Why use LED technology?

led tv heat output image

Linda Bert

what is the advantage and significance in using LED lights?

Answer
Due to their low operating voltage and high intensity light output they are very useful in digital and fiber optic applications. Their light is produced when an electron crosses the PN junction of the diode. This crossing produces photon emission therefore no heat is produced which makes them very efficient. This emission happens in all diodes, however the LED is created for maximum photon emission. The diode is then encased in such a way that focuses the photons for maximum output. IR diodes ( Infrared Diodes ) which produce light outside the visual spectrum of humans, are used in remote control application. TV remotes are a good example of this application.

Small screen showdown?

Nick

Well I'm looking at buying a TV for my room must be under 32 inches and I think I got the best sets here. Keep in mind that I need a headphone output or red and white output and I would like 2 hdmi inputs and I would like a toslink output for 7.1 surround headphones I have.

Contender 1. Samsung 26 inch led backlit TV

http://m.bestbuy.com/m/e/product/detail.jsp?skuId=4833538&st=un26eh4000&cp=1&lp=1&pid=1218538975092

I like it but not sure about backlit Tvs not sure if that is better or worse than edgelit.

Contender 2. Panasonic 24 inch tv.

http://m.sears.com/productdetails.do?partNumber=05771514000P&reviewCount=1&threshold=59.0&itemSrc=Online

Nice tv, 24 inches but is 1080p, not sure about inputs as I'm having a tough time finding what it has.

Contender 3. Lg 26 inch tv

http://m.bestbuy.com/m/e/product/detail.jsp?skuId=4853595&pid=1218552487058

Nice all around TV. 720p but again not sure about inputs and picture quality.

Contender 4. Toshiba 24 inch 1080p TV.

http://m.sears.com/sears_ProductDetails.jsp

It's 1080p but AGAIN no info about inputs!

Contender 5. 29inch hitachi led TV.

http://www.hitachi-america.us/products/consumer/tv/products/ultrathin_led/details/LE29H306.html

Has pretty much all I Need. Seems very nice but I'm not sure about the name.

If Sombody can please tell me which one would work the best for gaming (Xbox 360) and movies (apple TV) please do not say anything about plasma. As they do not have screens this size and if you do suggest a TV please it must be under 32 inches. 720p and 1080p doesn't really matter as I know there is no real difference between the two at these sizes and how far I will be sitting (5 feet back) thanks for any info and I will make my decision based on what you guys think! Thanks again!

Answer
Contender 1, because it is an LED tv which means it gives off less heat, uses less electricity, and has defined shapes and colors. It will work best with Xbox 360 and apple tv and it is a reputable brand so it will be high quality.

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How do I keep my Xbox 360 clean and damage free?

led tv heat output image

jim

I have a brand new Xbox360. I want to take very good care of it and use it for many years as possible. What's the best way to keep it clean, dust free, and undamaged? I have my Xbox on open entertainment shelf next to ceiling to floor height balcony window, my balcony window door is always open as I don't have AC in my condo. Any suggestions?

Answer
I to am pretty intense with my Xbox 360's care. Ive done some looking around and searches for this stuff, number one thing is if you have any discs spinning in the drive, or the xbox is on with a disc in it, DO NOT move it, not even the slightest bit... This wrecks both the drive, and disc.

To avoid the RROD (red rings of the death - best you look this up to on google etc.) do not keep your Xbox turned on for any extensive periods of time. About 8-10 hours on at once is pretty long, and could over-heat your Xbox. Ensure no fabrics or materials are covering your Xbox, it has reasonable ventilation and usually standing it upright can avoid any heat problems. Nevertheless, its more dangerous and lying it horizontally will work just as well.

Your balcony windows being open should be fine, however, make sure no fine dust is building up at the rear on your console. Any wet, humid conditions can damage the circuiting over time also (happened with my PSP) so keep your Xbox as dry as possible.

Static from TV sets and other electronic devices attracts dust in quite heavy amounts. A very light solution of fabric softener and water can cancel out this effect for about a week or two, Thought it must be applied very lightly to any surfaces with a paper towel, and is not recommended for Plasma, LCD or LED screens...

Insure your Xbox is always on a flat surface, that isnt balancing on any unstable grounds (soft thick carpets, blankets etc.). Make sure all cables leading into it have enough room to lead out, then towards their input (so they are not on a tight angle from the Xbox output, damaging the head on the cable). Place all cables in an area where you can not trip over them. Try to keep a distance between your Xbox and your TV set, for heat and radiation reasons. Around 1 meter from the center of the screen is enough I think.

Don't place any sharp, serrated or blunt objects the Xbox case, such as coffee mugs, DVD players, scissors etc. Don't let animals crawl on them too (I know from personal experience...)

Those are a few things I know, and I know there are plenty others you can do ... But by the way, if your under 18, and you say this on your Xbox Live gamertag, Xbox Live will cancel your purchasing of many free online content. So I'd say lie about your age with that...

Happy gaming, glad your not a Sony fanboy :)

How much power is wasted on the LED clock on a microwave oven in a year? Gas Oven? (in the US) Thanks.?

Mark L

I had seen somewhere on the web that the typical use of a microwave oven would use more power for the LED clock in 10 years time then cooking. Looking to learn more.

Answer
After reading your question, I used my "Kill-A-Watt" meter and measured the consumption of my microwave oven.

The base load of the microwave is 2 watts. This number did not fluctuate based on the LED display. This is basically the power consumption of the electronic controls.

2 watts x 24 hours x 365 days x 10 years = 175,200 watt-hours or 175 kWh.

When operating at 100% power, my microwave oven draws 1750 watts. (1.75 kW) A bag of microwave popcorn takes about 3-minutes or 1/20th of an hour. (0.05 hours)

1.75 kW x 0.05 hours = 0.0875 kWh

Microwave frozen dinners take a bit longer, but boiling a cup of water for instant coffee or tea takes less time. I will assume that the average microwave "event" takes 3 minutes or the 0.0875 kWh.

If we assume a average of three microwave events per day, in one year this amounts to:

0.0875 kWh per event x 3 events x 365 days = 96 kWh.

Actually 2-watts is pretty low. Other applicances such as VCR's and TV's generally draw much more when they are turned off.

P.S. No, I don't have a supercharged microwave oven. It is rated 1200 watts, but that is the output used to heat the food. The actual power consumption from the electric utility is 1750 watts at full power. (measured with the Kill-A-Watt)

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