Re: [hreg] PV Panel voltages
- The open circuit voltage times the short circuit current you measured times about 70% fill factor says you have about 14V x 1A x 0.7 = 9.8 Watt panel, assuming it was in full, direct sun and that it is working properly. You can't know if you have a low fill factor unless you test it under load. If you can see individual cells, they are about 0.5 volts each. Do you have 24 - 28 connected in series?
----- Original Message -----
From: "Bill Swann" <dbswann4@...>
Sent: Thursday, May 21, 2009 3:10:46 PM GMT -06:00 Guadalajara / Mexico City / Monterrey
Subject: [hreg] PV Panel voltages
I tested a small panel recently, and the open circuit voltage was 14v. When I partially shaded the panel, the voltage dropped a little bit. Does this imply that the wafers are connected in parallel?
Also, I put an ammeter on the output (no load), and the amps was climbing from .6, upward of 1 amp. What does this mean?
Thanks, Bill s