Buck Boost Converter for small wind project

Discussion in 'The Projects Forum' started by asval, Sep 3, 2013.

  1. asval

    Thread Starter New Member

    Sep 3, 2013
    2
    0
    Hello, I'm building a small wind turbine using a stepper motor I removed from a printer which will be used to charge a 6 volt battery. I'm making the rectifier myself and I'll probably be using capacitors rated at whatever max voltage the buck/boost board that I choose uses.

    While looking through ebay for 6volt charging controllers I spotted 2 boards that look Ideal for my application. The first one I found looks like it'll work just fine for my application.

    [​IMG]

    http://www.ebay.com/itm/39062064957...l?_from=R40&_sacat=0&_nkw=390620649574&_rdc=1

    The second board looks like it would be better since it has a charging indicator.

    [​IMG]
    http://www.ebay.com/itm/LM2596-LM25...377?pt=LH_DefaultDomain_0&hash=item2a1263cf01

    Any other controllers I should be looking at?
     
  2. wayneh

    Expert

    Sep 9, 2010
    12,088
    3,027
    I agree the second one looks a little better but it would be nice if there were more specifications posted.

    Be sure to come back and post your results once you've made your choice. I'll be curious to see what efficiency you actually get.
     
    asval likes this.
  3. asval

    Thread Starter New Member

    Sep 3, 2013
    2
    0

    Agreed, there never seem to be enough specifications posted and most times I see conflicting ones on ebay.

    Will do, though I doubt it'll be that efficient since I intend to keep the output at 6volts for charging a 6 volt lead battery. Already ordered it, so it'll be about a month until I come back :p.
     
  4. wayneh

    Expert

    Sep 9, 2010
    12,088
    3,027
    A nominal 6V lead battery will need more than 6V to be properly charged. About 6.6V, depending on temperature.

    Take a look here.
     
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