MECHANICAL AND ELECTRICAL PORTABLE CHARGER

This paper proposes a modern and an easy way to charge any electronic devices. The circuit is designed in such a way that it can charge the device by rechargeable cell types found in power bank or by hand crank low voltage geared dc generator. When using in electrical mode, the lithium-ion cells are charged through main supply and the stored charge is used to charge the device. In mechanical mode, the crank will rotate the shaft of dc motor to generate same amount of power. This technique is versatile since power is generated by human power and also from main supply.