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A World Without Cords: An Overview of Wireless Charging

Qi (pronounced as "chee") charging is an optimized inductive charging, also known as “wireless charging” allowing you to charge your devices wirelessly. Only compatible devices’ batteries are charged by using induction transfer without requiring separate chargers, cables or adapters... Simply place your compatible device on top of the wireless pad and watch your device charge.

What is Qi Charging?

It is an optimized inductive charging, also known as “wireless charging.” This allows you to charge your devices wirelessly. Only compatible devices’ batteries are charged by using induction transfer and there are no separate chargers, cables or adapters needed while travelling. Simply place your compatible device on top of the wireless pad and let your phone be charged!

In this technical article, we will give a detailed explanation of how this wireless charger works.

Global Standard of Wireless Charging:

Qi is the universal interface standard for wireless charging. It is the Chinese word for “air energy flow” or “spiritual energy flow” and pronounced as “chee”. This standard was developed by Wireless Power Consortium, to transfer inductive electrical power over the distance of up to 4 cm i.e. 1.6 inches.

It was established in December 2008 by WPC (Wireless Power Consumption). The Qi low-power specification was published by WPC in 2009. In 2011, the WPC began to extend the Qi specification to medium power.



System Overview

A Qi system comprises of:

● Base station

● Mobile devices

● Power conversion

● Communication

Let’s take a look at how these devices operate in order to charge a battery.

Base Station:

It contains one or more power transmitters that comprise of a transmitting coil, which generates an oscillating magnetic field. The base stations are typically of flat surfaces.
By Agu Paul.

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A
PROJECT
ON
THE DESIGN AND CONSTRUCTION OF AN ELECTROPHORESIS MACHINE FOR GENOTYPE TESTING

BY

AGU, PAUL MADUABUCHI
EBSU/2014/72668

DEPARTMENT OF TECHNOLOGY AND VOCATIONAL
EDUCATION
FACULTY OF EDUCATION
EBONYI STATE UNIVERSITY
ABAKALIKI, NIGERIA

CHAPTER ONE
1. O INTRODUCTION
Electrophoresis machine is a machine used in detecting the genotype of human being which basically is AA, AS, SS.
For many years, people died of many diseases they have no knowledge of nor do they have idea of how to curve. It was not clear to them if the death was as a result of a single disease or multiple of diseases.
People worked tirelessly and laboriously but the produce from their farm was not enough to feed their family not to talk of selling them to generate a sustainable income.
Many couple witnessed sudden death of their child at birth or at their teen, without knowing the cause or how to avert it.
The advent of the knowledge of electrophoresis threw light on the genotypic constitution of cells. This gave rise to hybrid as a result of cross bred, which eventually solved the problem of low yield (harvest).
The knowledge also goes a long way to diagnose the causes of different diseases that causes death, the likes of cancer called multiple myelona, sickle cell, diseases at birth, chronic liver disease etc.
The knowledge did not only unravel the causes but also led to the development of authentic cure. Also intending couple’s eyes were opened to their genotype status, giving them room to decide on whether to go on with their marriage or not, as the likelihood or otherwise of having sickler as a child is made know to them.
1.2 BRIEF HISTORY OF ELECTROPHORESIS MACHINE
Historical fabrication of electrophoresis defined with the work of Arne Tiselius in the 1930s, and new separation processes and chemical analysis technique based on electrophoresis continued to be de

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