request for pv boost circuit

[dnix71]

Is there a simple circuit that will boost voltage on a shaded panel to about 20v and then pulse it? Kind of like cameras have to make flash voltage? I would put one on each controller at the panel input terminals. Some fancy controllers probably do that, but I don't see the need to spend lots of extra money.

Florida is supposed to be the "Sunshine" state, but we have had so little sun for over two weeks that I am forced to boost my batteries with 2 amps from wall warts to keep the fridge and computer going. No complaints about the rain, though, we desperately need it.

[JamesJackson]

This is very possible.

Basically, what you want to do is incorporate a voltage 'boost' circuit that works at around 8-volts (which would be a cloudy day on the solar panel), and boosts it to about 16 volts (or 20 volts).

You would then put that voltage to the input of the charge controller - which then charges your battery.

Regards,

James

[wpowokal]

http://secure.oatleyelectronics.com//product_info.php?cPath=81&products_id=223&osCsid=a9ea60
7d248ddcec3344072f93040077

[electronbaby]

A very good reason to add more modules in series and switch to an MPPT controller. It will do what you want in lower light levels.