sir i am a B.E. ECE final year student.for preparing an report i need an literature survey documents .so please send the details.

Coin-based mobile charger is very useful for people who are using mobile phone without charging the condition in public places.All of which are equipped with mobile phones outside their home office for free. The coin-based cell phone charger is very useful for that person to use a coin for the mobile charge carriers. The infrared sensor is an electronic device that measures the infrared (IR) light that radiates from objects in its field of vision. The apparent movement is detected when an infrared source with a temperature, such as human, passes in front of an infrared source with another temperature, such as a wall.

The mobile phone charger based on the currency is very useful for that person to use currency to charge for that mobile. The IR (infrared) transmitter is used to transmit the IR signal on the transmitter side. The IR receiver is used to receive the IR signal on the receiver side. Between the IR transmitter and the receiver, insert a coin to change the pulse polarity at the SCU input. The SCU is used to convert the low pulse into the high pulse and the pulse is inverted in the inverter. The 555 IC acts as a timer to produce a high pulse for a given period of time. Again, the SCU is used to convert the low pulse to the high pulse and this output is given to the input of the driver circuit. The driver circuit is used to provide sufficient relay input voltage. The relay will turn on to activate the 230v charger.

The growth of the mobile phone market is phenomenal in recent years and the need to charge the mobile battery is required anytime, anywhere. In many developing countries the power of the network is not available from a few hours to several hours on a daily basis, especially in semi-urban and rural areas where mobile phones are the essential communication device. While the urban population uses more sophisticated mobiles with good power batteries that last a few days, the rural population buys pre-owned mobile phones that require frequent charging even two or three times a day. In case of unpredictable network power and availability of abundant solar energy. A universal coin-based mobile battery charger is designed and developed in this document. This device is like a vending machine for charging the mobile battery in kiosks and the user has to connect the phone to one of the adapters and insert a coin to charge a constant current for a defined time. The application of solar energy to the battery charge has been studied in the past. Solar chargers convert light energy into direct current for a range of voltage that can be used to charge the battery. They are generally portable but can also be mounted tightly. In this coin-based mobile charger design a fixed size 635x550x38mm solar panel, 37WP is used to charge the battery up to the maximum 2.0 amp in bright sun light. This article discusses the design and development of a universal battery charger based on solar energy and main energy and this is mainly for rural areas where mobile are basic communication needs and main power is not available all the time . The motivation for this research came from published articles