Archives

August 2015

Mechanism of AC Voltage Generation & Concept of Transformer

AC voltage is generated on the principle of Law of electromagnetic induction. Consider a simple model of generator. Suppose a rectangular coil is rotating, in anticlockwise direction, on a fixed axis within the strong magnetic field of two permanent magnets. Then AC voltage is produced across its two end points A-B. The voltage thus, produced…

Filed Under: Bifocal Electronics

Difference between e.m.f. and voltage (potential difference)

In 10th standard, you might have studied the concept of e.m.f…! But that was not covered in details. Actually in practice, the potential difference and e.m.f. of a cell or battery or any electrical source are different. The potential difference is ALWAYS LESS than the e.m.f. This happens because internal resistance (r) of any real battery/source is GREATER than…

Filed Under: Bifocal Electronics

The Gravity forms are showing weird errors with the latest WP update. The error is as follows: function WP_List_Table::get_columns() must be over-ridden in a sub-class. Due to this error the customisation of confirmation and that of the notifications have completely stopped. If you already have created some confirmation message and/or the email notification for your…

Filed Under: Web Designing

How digital multimeter works?

Introduction: It is a common & important laboratory instrument. It is used to measure AC/DC voltage, AC/DC current and resistance with digital display. It gives digital display, which is very accurate. It has an advantage of very high input resistance. It also provides over ranging indicator i.e. if the unknown electrical quantity increases beyond measuring…

Filed Under: Bifocal Electronics

Spinning 3pi line following robot

This is newly written code for the students of YRC – run under Vidyasagar Academy, with the spinning ability while following the black line by the world’s fastest robot – POLOLU 3pi. This code is written by our expert faculty, Prof. Dattaraj Vidyasagar, for the students. The code gives the ability to trace the direction…

Filed Under: Downloads

Gravatar म्हणजे Globally Recognised Avatar. काही लोक त्याचा उच्चार ग्रवतार किंवा GR अवतार असा करतात. तुमचा Gravatar म्हणजे तुमची एक image आणि तुमची विशिष्ट प्रोफाईल.  Gravatar चा फायदा असा आहे कि, इंटरनेटवर तुम्ही ज्या ज्या website वर जाऊन comment कराल, किंवा काही पोस्ट कराल,  त्यावेळी तुमचा email address तेथे लिहिल्यानंतर तुमचा छोटासा photo आणि तुमचे नाव…

Filed Under: Web Designing