WEEK 2

TITLE : Overall operation USB Solar Charging.

METHOD :

INTRODUCTION 

• The usb solar can take the battery anywhere this is because the usb solar is using solar panel. Solar panel is using photovoltaics (pv). Photovoltaics is a method of generating electrical power t by converting solar radiation into direct currentt electricity.

• Any usb port can supply 5v up to 500mA. The usb standard specifies that a device may not more than 100mA untill it has negotiated the right to use 500mA, but apparently no usb ports enforce that requipment. This makes the usb port a convenient source of power for devices such as this charger. 

• A charger controller the rate at which electric current is added or drawn from electric batteries. It prevents overcharging and may prevent overvoltage, which can reduce battery performance or lifespan, and may pose a safety risk. 

•  Rechargeable battery it can be used on numerous occasions at very little cost compared to using non rechargeable, which has a limited life span and not cost effective. This almost trivial circuit may be used to charge a pair of AA or AAA sized rechargeable battery cells from sunlight.

 OPERATION OF EACH PART OF BLOCK DIAGRAM.

Photovoltaic (pv).    

 

Charger Control.

 

Rechargeable Battery.

    

Circuit Charger.

 

Handphone.

CONCLUSION :

A solar power system can run all of your household appliances and is fairly portable if , for instance, to go camping and run an electric fan panel. Making a solar usb charger is easy and fun. This charger will allow you to charge or power any usb powered device with nothing more than light. Solar batteries that can be recharged with energy by using solar chargers.