Collection Schematic

When we ride bicycles.Some times we have to face some troubles at night.Specially when we ride mountain  we cant get sufficient light  though we have a dynamo because when we ride a mountain speed of the bicycle  will reduce so that speed will not enough to give sufficient light.So I suppose this would be the answer for that.This schema is operated with 9V and it will give a good light though the dynamo doesnt give the power.