mobile cell phone charger using ic 555 abstract

Charging of the cellphone battery is a big problem while travelling as power supply source is not generally accessible. If you keep your cellphone switched on continuously, its battery will go flat within five to six hours, making the cellphone useless. A fully charged battery becomes necessary especially when your distance from the nearest relay station increases. Here s a simple charger that replenishes the cellphone battery within two to three hours.Basically, the charger is a current-limite ....etc

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To get full information or details of coin based mobile phone charger for multiple phones ppt please have a look on the pages

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Streaming Mobile Augmented Reality on Mobile Phones

ABSTRACT

Continuous recognition and tracking of objects in live video captured on a mobile device enables real-time user interaction. We demonstrate a streaming mobile augmented reality system with 1 second latency. User interest is automatically inferred from camera movements, so the user never has to press a button. Our system is used to identify and track book and CD covers in real time on a phone s viewfinder. Efficient motion estimation is performed at 30 fr ....etc

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Environmentally friendly cities: proceedings

ABSTRACT:

The topics covered in these proceedings include: urban planning; bioclimactic planning of outdoor spaces; solar architecture; retrofitting; strategies, systems and components; daylighting; passive cooling and natural ventilation; and energy and environment impact of building materials
ISBN: 1873936818 ....etc

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my name is smriti, i am a final year mechanical engg student and looking for a project to submit in the college. I want to ask that what can be different eco friedly fuels for automobiles and how can i make a suitable fuel. I have theoretical ideas about all these but never made made some practical experiment. so, pleas tell me how can i proceed. ....etc

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current/voltage regulation or short-circuit protection. These chargers provide raw 6-12V DC for charging the battery pack. Most of the mobile phone battery packs have a rating of 3.6V, 650 mAh. For increasing the life of the battery, slow charging at low current is advisable. Six to ten hours of charging at 150-200mA current is a suitable option. This will prevent heating up of the battery and extend its life. The circuit described here provides around 180mA current at 5.6V and protects the mobile phone from unexpected voltage fluctuations that ....etc

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