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Home > Business > PTI > Report


Using air to charge cellphones? IIT-Delhi does it!

February 24, 2005 10:41 IST

All you need to charge your mobile is -- air!

Students at the Department of Industrial Design at Indian Institute of Technology, Delhi have attached a turbine with a mobile phone that helps charge it even when the user is travelling, Head of the Department Professor Lalit Kumar Das told PTI.

"The electricity generated by the turbine when moved by wind energy could charge a cellphone in an emergency. It generates electricity to the tune of 3 to 4 watts which is sufficient to charge a mobile phone," he said.

The specially designed turbine, which costs about Rs 200 to be developed inside a laboratory, is so small that it could be easily kept in a pocket, he said.

The primary objective of the device is to extend mobile 'connectivity' where there is no electricity. The device also saves energy, though not to a significant extent, he said.

The electricity could also be used for other purposes such as illumination and playing a radio. High intensity light devices (HILDs) and radio require low energy to function that could be easily provided by the turbine, he said.

The device is best suited for coastal areas where the wind flows almost continuously.

The technique is not yet commercialised but the department has sent a proposal to the ministry of science and technology to help manufacture the turbine on a large scale, Das said.

"The device will help mobile phone users charge their phones while travelling in a bus, a car or a train. All they need to do is -- place the turbine against the wind flow. It will use wind energy to move the turbine thereby generating energy," he said.

The students have also used a spring in the device that can store energy through a handle. It could be used to charge a mobile during power cuts, the scientist added.


© Copyright 2006 PTI. All rights reserved. Republication or redistribution of PTI content, including by framing or similar means, is expressly prohibited without the prior written consent.

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Number of User Comments: 20




Sub: Congratulations!

that's like IIT student.This product has to developed,manufactured,advertised & made available to all indians on large scale.


Posted by Pranav bormane





Sub: comment on the project.

sir, i appreciate ur project but suppose there is no wind then it no not possible to charge the mobile.can we do it in any ...


Posted by joydeep banerjee





Sub: Intersting

Good development


Posted by Milind Pande





Sub: An apreciable attempt.

It's good to hear about such a device developed by IIT Delhi.It's definitely a good attempt,within an affordable way, so rural persons can also take ...


Posted by Gaurav Khatri





Sub: Why dont they do better?

Well, I am looking out for someone who can help me design a battery for permanent pacemakers that could be charged with body movements, so ...


Posted by Manish Jain




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