The Photowatt is French. Early 80s most likely. Windy Dankoff imported them for
a few years, late 70s - early 80s. They’re remarkable modules. I had (before I
retired) several clients still using them. Every one is still putting out at or
close to rated output, 40 years later. The only problem I
If you can't find anything, I would think measuring Voc, adjusting for
temperature, and then dividing into the wattage would give you some
reasonable approximations. Chris
On 9/12/2022 10:28 AM, Amos Post via RE-wrenches wrote:
Hi all,
I have a few old modules I am trying to date best I can.
Hi all,
I have a few old modules I am trying to date best I can. One is an Photowatt
(Arco?) 55Watt silver frame yellow backsheet, one is a Solarex 53Watt silver
frame grey back sheet, and one Arco 50Watt black frame black back sheet.
Looking for help with dates and if anyone knows of good we
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