Monday, April 23, 2012

LUNAR LASER COMMUNICATION


INTRODUCTION

The present trends of communication are through transmission lines, optical fiber and microwave wireless communications. Fiber-optic communication is a method of transmitting information from one place to another by sending pulses of light through an optical fiber. Microwave transmission refers to the technology of transmitting information or power by the use of radio waves whose frequencies are  spectrum ranges across of roughly 1.0 (GHz) to 30 GHz referred as microwaves. These all type of communication technologies has their own disadvantages. In optical fiber communication losses like attenuation, absorption, scattering and radiative are occurred. Losses can occur in transmission lines if it shouldn’t perfectly terminated at its characteristic impedance. Microwave devices such as MASER can cause ozone depletion due to its high area of radiation.

Sunday, April 1, 2012

Inflammable gas leakage detector

Arrest Fire...!!!!!


DANGERS OF INFLAMMABLE GASES LEAKING

Some of the inflammable Gases are not toxic. But they are extremely flammable and will cause an explosion; it will also kill you by asphyxiation if it leaks into an enclosed space and deprives you of oxygen. In case of methane it only becomes poisonous when it forms part of another gas and is subject to certain circumstances. The bad news is that this happens quite often.


Don’t worry…. Here is a solution for detecting the inflammable gas leakage. The circuit uses a gas sensor which can detect the presence of LPG, Propane, Methane and Hydrogen also other combustible streams.