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Cell phone chargers by movement:

The most common definition of energy is the capacity of a system to do work. Energy is the power that comes from the different energy sources such as oil, coal, solar energy, and energy movement. Energy is a critical component of our lives and our economy as a whole, and it considered the most critical economic, environmental and developmental issues facing the world these days. Thus energy sources have evolved with the increase of energy consumption.

There are a lot of devices that work around us need a source of energy in order to work. One of them is a Mobile phone that is one of t he most widely used devices. A mobile phone also known as a cell phone, is a device that enables a user to make and receive telephone calls for communicate almost anywhere in the world. As we all know, that the source of power for mobile phone is the battery. The battery itself needs to source of energy in order to provide mobile phone energy, so most of this energy comes from electric power. What happens if we lose this source of energy under any circumstances, or power supply source is not generally accessible.? Are there alternatives for charging mobile phone? Therefore, the main purpose of this paper is to address the problem of mobile phone chargers when electric power source is lost. The project depends on a small device that depends on the movement of "human movement, for example," to provide a source of energy for charging mobile phone.

This device has several benefits such as depends on the movement to generate energy, power generation at any time, any place, especially in cases of emergency, does not affect the environment because it is not generate any kind of toxic gases that affect the ozone layer, provides a source of energy in case of emergency and in long trips when the power supply source is not generally accessible.

There are a lot of developers are working in this field to generate electrical energy from the movement. One of them is Max Donelan that provided knee Brace. "Donelan says one minute of walking with the knee brace can generate enough energy for a 30-minute cell phone conversation." But the high cost of this device is big problem. Other product which is Livecell. This product is great for small devices like remote controls. Also, Finger-Powered Batteries or The Swing Your Energy Charger, this device is a quick and easy solution to charge mobile batteries? The important disadvantage, we need to remove the battery for charging, we can not speak and charging at the same time. Sometimes we need to talk without loss of contact especially in emergency cases.

The project is aimed at making a small device that generates electrical energy by the movement. This energy produces through the movement of a magnet inside the tube containing copper wires. Then the resulting energy is converted from AC to DC by rectifier and then charging cellphone directly or It is possible to put a battery to store energy that generated by the movement and use it to charge the cell phone when necessary.

To evaluate the results we will use some special devices such as Avometer or Multimeter to measured the some variables that produced from the device such voltage and resistance. Also If we have time, we can create a simulation by using simulation programs to evaluate the results and find the best design to generate energy.