24-07-2015, 02:38
tried mapping current from cf with irradiance from pyranometer, however the trendline did not cross the origin 0,0; used ~1.5R across cf, intercepts at around -50 W/m2 at 0A
next i tried to collect the voltage and current value from my cf, and the resistance is not 1.5R anymore, it becomes around 4 ohm for all data, for instance
28.8mA - 113.8mV (R=V/I=3.95R)
31.8mA - 126.2mV (R=V/I=3.97R)
does this has something to do with the series resistance of the cf?
next i tried to collect the voltage and current value from my cf, and the resistance is not 1.5R anymore, it becomes around 4 ohm for all data, for instance
28.8mA - 113.8mV (R=V/I=3.95R)
31.8mA - 126.2mV (R=V/I=3.97R)
does this has something to do with the series resistance of the cf?