On 28/05/2019 03:39, Bill Wright wrote:
On 27/05/2019 23:23, Martin Brown wrote:

It limits the maximum current flow through the weakest link in the
chain

Why should it?

The current is produced by light creating free electrons. In the shade
the silicon is almost an insulator. The maximum current that the thing
produces is limited by the panel that can provide the smallest current.

Without photoelectrons to move the rest just heat up a bit more and make
the voltage across the weakest panel higher. The panel in shade behaves
like a resistor preventing a higher current from flowing.

It isn't unlike the situation where you put a mixture of used and unused
batteries in a torch. The weakest one limits performance greatly.

--
Regards,
Martin Brown