After performing some tests on a small sized solar panel, I have been able to determine that the panel outputs on average, around 6v (Open source voltage) 300mA (Short circuit current) with no load. Testing with variable loads the solar panel only managed to output around 5v 5mA.
In order to drive the circuit at the solar panels load, I need a current of up to 2A. Seeing as the increase is so high, is this at all possible using something like a current amplifier?
Alternatively, I can switch out the solar panel being used for a 'solar battery bank', the one I have is a solar panel mounted on a 15000mA battery. From here I can drive the circuit, although, ideally the output voltage should vary depending on the panels output rather than the battery. In this scenario I could use a potentiometer to vary the voltage. But I'd rather just amplify the current or the original panel of possible.
Best Answer
You can't break physics.
5V @ 5mA is 25mW. Power must remain constant (less converter efficiency), so (25mW*90%)/2A = 11.25mV (assuming an optimistic 90% efficiency). So if whatever you are trying to power is fine with about a hundredth of a volt (which I very much doubt), that's fine. Otherwise, you're gonna need a lot more solar panels.
Edit: regarding a current amplifier:
OP, you can build a current amplifier, but think about this carefully: what will you power the current amplifier with? If you power it with itself, that's not going to work for reasons mentioned above: you can't get more power from something. Or you power it with an external supply (a nearby outlet, say), which completely defeats the purpose of having the panel.