Measuring PV panel performance


I See Electromagnetic Fields!
Zoomed in on the one bad panel. Good news it it can be tested in-situ, so no need to disconnect anything to inspect for failing panels. Works best during operation.

Those were Sharp 165W. Now for AstroPower 120W and SunPower 327W
20210921-152231.jpg 20210921-152401.jpg

Two panels as power source, producing 79 Voc, 41V @ 2A into panel under test
2 panels IMG_1708.jpg 79 Voc IMG_1718.jpg 41V 2A IMG_1720.jpg
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