25-07-2015, 15:44
Hi,
Are you making those measurements with one meter or two (concurrently)? In general you can't use one meter because the presence of the meter affects the measurement. If you are using two meters, ensure that the voltmeter is connected directly across the PV panel only, not the ammeter as well.
Generally, the best method is to ensure that you know the exact load resistance and then you can calculate the current from the voltage drop across that resistance.
Cheers, Alan.
Are you making those measurements with one meter or two (concurrently)? In general you can't use one meter because the presence of the meter affects the measurement. If you are using two meters, ensure that the voltmeter is connected directly across the PV panel only, not the ammeter as well.
Generally, the best method is to ensure that you know the exact load resistance and then you can calculate the current from the voltage drop across that resistance.
Cheers, Alan.