Subject:
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Re: Solar Cell Output in Direct Sunlight
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Newsgroups:
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lugnet.robotics, lugnet.dacta
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Date:
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Fri, 6 Apr 2001 20:16:59 GMT
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Viewed:
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8442 times
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I have a Halogen uplight lighting a room and my solar cell will power a
motor, with no load up to a distance of around '6 (3' work height) from the
light pole. This will fluctuate according to the reflectance's of the
ceiling, walls, etc.
Rose
"Micah J. Mabelitini" <micahx@kih.net> wrote in message
news:3ABD9714.465172B9@kih.net...
> Matthias Jetleb wrote:
> >
> > I'd suggest that you try this again mid-summer. The solar radiation
> > angle is still fairly low at this time of year with much of the energy
> > being scattered by the atmosphere as well as being spread over a
> > larger surface area of the earth. I have observed a significant
> > difference in the charge time of my solar-powered car as the seasons
> > pass. The peak charge will come in mid-June. Let us know what the
> > output of the cell is when the radiation angle is at it's maximum (or
> > close to it - June 20)
> >
> > Matthias Jetleb
> > VA3-MWJ
>
> Well, I could certainly create an artificial environment which would
> increase the solar cell's output without the need for scheduling another
> test on the summer solstice, if you were merely curious as to its
> maximum output based on the cell's physical properties. The vernal
> equinox was a couple days ago, which makes my test fairly indicative of
> an average performance level for the solar cell in direct sunlight. My
> latitude is also fairly average, at about 36.5 degrees north. The
> measurement was taken about 3:00 PM local time. Yes, I could take more
> measurements this summer, but the data wouldn't be very useful except
> for people living around 36 degrees north in June; there's simply too
> many variables when dealing with sunlight. I was just trying to give
> some idea as to what you can expect from the solar cell.
>
> Here's some more useful information: the solar cell ceases to power a
> 5225 (71427) 9V motor under *no* load at about 1' from a 100W
> incandescent lightbulb, a light source available to anyone with
> electricity. At this distance, the solar cell puts out about 3.4V, 10mA.
>
> --
>
> Regards
>
> Micah J. Mabelitini - LUGNET #918
> accutron@kih.net
> BrickDreams - http://www.users.kih.net/~micahx/brickdreams/
> RCXbug - http://www.users.kih.net/~micahx/rcxbug/
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Message is in Reply To:
 | | Re: Solar Cell Output in Direct Sunlight
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| (...) Well, I could certainly create an artificial environment which would increase the solar cell's output without the need for scheduling another test on the summer solstice, if you were merely curious as to its maximum output based on the cell's (...) (24 years ago, 25-Mar-01, to lugnet.robotics, lugnet.dacta)
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