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bicycle dynamo rectifier and regulator

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Step 1What you need and where to find them

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6 comments

May 9, 2012. 11:44 PManorris5 says:

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

May 8, 2012. 5:40 AManorris5 says:

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

May 8, 2012. 12:34 PMman-of-light (author) says:

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

May 7, 2012. 5:48 AManorris5 says:

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?

Aug 30, 2011. 10:06 AM

zazenergy says:

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!

Aug 30, 2011. 5:31 PMman-of-light (author) says:

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.