Journey through the past(Asutosh College)

8 Mar

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Being discarded from medical preliminary exam and from good government Engineering Colleges,life at Asutosh started with full of fear and anxiety.A common question was “Will i be able to prove myself worthy?Will i be able to add pride to my family’s life.” And there were various such related questions. Prayers to God and flame in heart helped me start my first day with full courage and confidence. Continue reading

Automated Solar Radiation Tracking System

8 Mar

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If we could configure a solar cell so that it faces the sun continually as it moves across the sky from east to west, we could get the most electrical energy possible. One way to do this, of course, is by hand. However, keeping a solar cell facing the sun throughout the day is not a very efficient use of a person’s time. Going outside to a solar cell every hour to turn it toward the sun might be possible, but this would still not be an efficient method. A photo sensor is employed to control the solar cell tracking system. For example, if the photo sensor is not aligned with sun rays, then it could turn on the motor until it is once again aligned. If the motor is attached to the frame holding the solar cell, then the solar cell could be moved to face the sun. As long as the photo sensor is in alignment with the sun, nothing happens. However, when the sun moves across the sky and is not in proper alignment with the photo sensor, then a motor moves the frame until the photo sensor is in the sun once more. Continue reading