USB Charger, Gear, Dynamo, PCB, Hand Crank Charger, Mechanical Energy.
Technology is our means to remain connected. As technologies have become more powerful and capable, their requirement of power has increased correlatively. Lamentably, battery technology has not showing comparable growth. Hence, there is a need for frequent charging. People usually face a common problem in charging their electronic appliances while travelling. My solution to this problem is gear train mechanism-based hand crank charger. Hand crank charger is a device which uses mechanical energy which is converted in to electrical energy through a dynamo and charges the electric appliances. It does not require any electrical energy. Hence, going for this renewable source of energy we can reduce the human footprint on Earth as we are using human effort instead of conventional energy. Light weight gears are used for conversion of mechanical energy from hand crank to dynamo.