The circuit is easy to build and requires only few components. A 6V 3W dynamo is used in the circuit but you can also connect the circuit with a 12V dynamo. If you want to use the circuit with a 12V dynamo just change the voltage value of the 2200uF capacitor from 16V to 25V. A female USB socket (Type A) should be connected at the output of the circuit from that you could connect your devices.
A bicycle dynamo output can be used to power variety of devices, in this article we are discussing about DIY bicycle USB charger circuit that will use the output power of your bicycle dynamo and produces a regulated 5V output to charge your devices which require 5V charging input for example
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