Plasma Television Viewing Is
Great and Fun
The Fluorescent Light Bulb Is
The Secret
The technology behind
Plasma Television is different
from the conventional television. In a conventional television there is a
cathode ray tube or what is commonly known as CRT.
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The cathode ray tube is fundamentally a big vacuum
tube in which an electronic beam,
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emanating from a single point in the neck of the
tube,
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scans the surface of the tube rapidly,
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which, in turn illuminates the red, green,
-
or blue phosphors on the tube's surface in order to
create an image on the screen.
However, in the Plasma
Television the technology is based on fluorescent light bulb.
The screen or display is made up of cells.
Each of these cells consists of two glass
panels and the gap separating the two glass panels are
infused and sealed with neon-xenon gas. This gas does not
leak and need not be filled. When the Plasma
TV is in use, the gas gets charged eclectically at
given intervals.
The image on the screen is created as a
result of this electrically charged bas striking the red,
blue and green phosphors. Each of the coloured phosphors is
known as a pixel.
In the event of a pixel failing it cannot
be repaired. This can be seen in old Plasma TV with tiny
dark spots. Each spot is a failed pixel. If large number of
pixels fails, you will not get the image on the screen and
the panel has to be replaced.
The immediate
advantage that is visible to everyone who looks at a Plasma
TV is its thin, flat appearance unlike the conventional
television which is box like and bulky. This is made
possible due to the non existence of the bulky Cathode Ray
Tube in a Plasma TV.
- A plasma television can last for over
thirty thousand hours. Assuming that a Plasma TV is used
for 8 hours a day, it can last for as long as 3,750 days or
over 10 years!
- A conventional CRT
television loses about 30% of its brightness after
about 20,000 hours. This happens slowly and you don’t see
that happen until the need to periodically adjust the
brightness and contrast controls to balance arises.
- Although the life time of a Plasma TV may
vary from brand to brand, this will stand true for
established brands.
- The pixel range of Plasma TV varies from
model to model. Depending on this pixel range Plasma TV can also be HDTV.
In order for a Plasma TV to be regarded as an
HDTV or HDTV-ready the television must be able
to display a vertical resolution of at least 720 lines. The
common Plasma TV in the market has only 480 vertical lines, top
to bottom, or a pixel count of 852 x 480.
The 852 denotes the horizontal lines, left to
right of the screen. These Plasma TVs are commonly known as
EDTV or Enhanced Definition Televisions.
For a Plasma TV to display HD images the pixel
count should be 1024x768 or higher. Plasma TVs
with such resolutions are also available in the market but the
price will be higher than the normal Plasma TVs. When shopping
for a Plasma Television, make sure to check if it is an EDTV or
and HDTV-ready unit.
How Long Does
a Plasma TV Last for
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