[Noisebridge-discuss] 40 volt solar panel

[Dan Cote]

Looks like this does MPPC.
http://www.timnolan.com/index.php?page=arduino-ppt-solar-charger

On Thu, Jul 5, 2012 at 3:22 PM, Jake <jake at spaz.org> wrote:

> What you need is a buck converter, which is a DC to DC converter which
> steps down a higher voltage to a lower one.
>
> You need one which can accept 40 volts or more, can be adjusted to output
> exactly 14.1 or up to 15 volts (depending on the chemistry of your battery,
> how long you want the battery to last, etc) and it has to be able to handle
> the wattage/amperage that you will be doing.
>
> How many watts is the panel?  How big is the battery?  These will help
> determine how many amps you will be passing.
>
> More fancy solar charge controllers are available, and you might want to
> choose one if this is a long-term investment like a water pump on a farm or
> something.  A fancy charge controller does something called Maximum Power
> Point Charging, which you could do with an arduino, but i digress..
>
> -jake
>
> Dan Cote wrote:
> Can anyone help me build a charging circuit for a 12 volt lead acid
> battery? There is a 40 volt solar panel on the roof that I would like to
> make use of.
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.noisebridge.net/pipermail/noisebridge-discuss/attachments/20120708/9203ae36/attachment-0003.html>