[Gta04-owner] Solar charger - was How could GTA04 shine

[Alexander Lehner]

On Thu, 8 Mar 2012, Bob Ham wrote:
>
>>> To get better
>>> efficiency a MPPT (maximum power point tracker) is recommended. Its a
>>> chip which regulates its own input voltage to the value where the
>>> panel delivers the highest output current.

Can you point me to a site, where I can get such one?
(Assuming that it's a chip and not a 100-200 EUR device as I found it 
right now...)

A.