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Saturday, August 16, 2014

Characteristics of a Sine Wave

Electrical sin wave form graph is a showing the variation of voltage or current. The horizontal axis shows the passing of time, progressing from left to right. The vertical axis shows the quantity measured ( voltage, ampere or Power ). There are six must important characteristics of sine wave. RMS value  Root mean squared...

Friday, August 15, 2014

Introduction of Global system for Mobile communications ( GSM ) Lesson 1

GSM is a Digital wireless Mobile telephony system that is widely used in the world. GSM use a combination of both the FDMA ( frequency division multiple access ) and TDMA (  Time division multiple access ). using this both combination can be transmit more channel of same tim...