Thursday, June 5, 2008

Save Power

Save Power, Save Money and Save Earth!
A story of a local discovery!
Our, City has been experiencing power cuts for the past years from my childhood. In summers it was unbearable in the hot summers. My father Mr. Dilip Kumar Dutta to solve this problem first installed a local inverter charger which looked like a stabilizer with one 12volt DC fan, one 12volt DC CFL light bulb and a 12volt battery; it used to provide us with light and air in one room for 8 hours but utilized a lot of consumption while charging.
Recently my decided to install a Home UPS 800VA from a reputed company with a 12 volt maintenance free battery which has changed our lives and we no longer linger with the problem of power cuts. But this spared us with the local inverter. So my father thought of another utilization of the charger, he used the charging wires of the battery to run the fan as an AC/DC converter. He connected the fan’s terminals to the positive and negative terminals and plugged the charger’s plugs to the mains and now we have a 12 volt AC/DC fan which provides sufficient air as compared to an AC fan with the advantage of lower power consumption.My father is a simple man, a railway station manager at a small station near Jhansi; he has qualifications of class 12thstandard but from young age he was a brilliant and natural guitarist and he even made his own electric guitar at a young age and performed at local stages. But due to getting service at young age his hobby could not flourish into his profession. But my father frequently show’s his brilliance and comes out with such fruitful ideas which can save power consumption and save Earth. The only thing he resists the most is appreciation and recognition and he thinks its common sense but for me he is great! He inspires me to become like him but I lack many of his qualities.

Sunday, May 25, 2008

Technology Jargon: Hardware of Computers eg.Monitors

Technology Jargon: Hardware of Computers eg.Monitors
When anyone goes for shopping for LCD monitors how does he know which type of LCD is fit for his/her use.
Liquid Crystal Display’s types:
Do LCD’s differ from each other? Yah, there are four types of LCD Monitors differentiated by the type of matrix.
1. Twisted Nematic (TN)
2. In Plane Switching(IPS)or Super In Plane Switching(SIPS)
3. Multi-domain Vertical Alignment(MVA)
4. Patterned Vertical Alignment (PVA).
Now how these could be differentiated by a common buyer as they are not clearly mentioned in the manufacturing specifications, even though mentioned who’s going to understand except for the experts! All this depends on the way the liquid crystals are aligned.
COST: Which one is light on the pocket and which is heavy.
TN is the cheapest and most of the LCD’s available in the market belong to this class.IPS & SIPS are much costlier than TN.MVA’s cost comes in between the above two. PVA is the modified form of MVA, it costs a little more.
What should we look for in a LCD monitor when buying?
1. We should look for visibility, point shape, pixel sharpness, line resolution, and shape integrity. These are the tests to test the ability of a monitor to work with 3D shapes like cubes, cones, spheres and 2D shapes like triangles, square, and rectangle polygons.
2. Colour rendition ability of an LCD uses a number of tests like colour purity test, shade intensity test, reverse text tests and colour ramp tests. A good LCD should have aces in these tests.
3. Contrast and grayscale tests which checks the ability of LCD’s to produce variations in intensity of a single shade and the ability to display pure whites (255) and blacks (000) shade.
4. The view able angle is another factor which has to be checked. The monitor produces distortion of image and its colours to change when viewed from an angle than straight.

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Jhansi, Uttar Pradesh, India
The researcher, for life on other planets existence.I believe that life in the universe is the cause of life on Earth. Life in other forms do exist. Those whom we call Gods were Genitic Engineers and of Alien Origin they came here and spread life after life was destroyed on other planet. No smoking, no drinking,like to eat chocolates!