Bicycle Dynamo Rectifier and Regulator

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Posted in OutsideBikes

Introduction: Bicycle Dynamo Rectifier and Regulator

About: i make, mend and modify things from rubbish, whether found or donated, whilst travelling around these islands off the coast of europe


Step 1: What You Need and Where to Find Them


Step 2: Connecting Everything Together


Step 3: Finished Product


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    9 Comments

    Thats great, best instructions for this solution online! What is the maximum dc amps you can get from this circuit from a 6v 3amp dynamo?

    hey, this is an awesome project, but would you mind explaining how this connects up to the bicycle? otherwise good job

    This *seems* like a very interesting project, but there are only pictures and no text (I'm not counting the image text). Perhaps if you explained what this does and how the circuit works, it would be useful to more people.

    Did you build a circuit board - or is it possible to do this with wires?

    I don't know much about electronics, and hope you don't mind a question :

    Will this 5v voltage regulator do, I can get it from a local store. But it does say 1A, whereas my dynamo is higher.

    http://www.maplin.co.uk/1a-low-dropout-fixed-positive-voltage-regulator-46321?c=froogle&u=46321&t=module

    1 reply

    thanks for your comments. yes the 7805 from maplin will do the job.
    most bicycle dynamo's i've seen are rated 3 watts 6 volts, and power(watts)=current(amps)xvoltage(volts)
    so that makes the current half an amp or 500mA

    This is great, and love how you explain where they can be found from old parts.

    Idea: This could be of use in the developing world where they need power for their mobiles. They could make them using your guide from old scrap parts?

    I love biking, but I'm not sure what this is! Could you add a few sentences describing what we're looking at and why you made it? I think that would be seriously helpful to the community at large. Thanks!

    1 reply

    thanks again zazenergy, glad you love biking, i added a few more lines of explanation, and will continue to, to ensure anyone interested can build one of these for themselves.