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Old 13-12-2011, 07:44   #31
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Re: Solar Panel Gauge Showing Charge at Night ?

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Originally Posted by Seahunter View Post
Yet the fact that your blither blathering myopic views struggle to make any sense, ideas not put to any practice, merely based on premise, do not in any way make it an untruth that solar panels can and do produce electricity from moonlight.
Why donít you say what you really think.
This is a technical discussion, there is no need to get so upset
It is not even an anchoring thread
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Old 13-12-2011, 07:55   #32
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Re: Solar Panel Gauge Showing Charge at Night ?

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Originally Posted by senormechanico View Post
I'm not jerking anyone's chain, but 100ma from the moon HAPPENED.
The moon was high overhead, full and it was on Mexico's West coast. Tenacatita to be exact.
I understand perfectly digital display's resolution and offset etc as well.

It was a full moon a couple of nights ago, maybe tonight I'll set up a 20 watt panel I have lying around and hook it up to a 12 volt battery and set my fluke in series with one lead on a 300ma current setting and see what I get.
With only a 20 watt panel, I certainly won't expect 100 ma, but it's worth it just for fun.
Maybe someone else might want to try the experiment as well.

Sorry for all the thread drift.

Good idea a practical test.
Make sure you get the leads the right way around as there may be a slight discharge if there is not a blocking diode.
It would also be worth measuring the Voc and reporting what it was under moonlight. That is the voltage the solar panel is producing when disconnected from the battery. This has to be above the battery voltage for any hope of any positive current flowing.



BTW i am not disputing you saw 0.1A on the meter. I just do not think the meter was accurate.
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Old 13-12-2011, 09:01   #33
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Re: Solar Panel Gauge Showing Charge at Night ?

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Originally Posted by GordMay View Post
Accordingly, it may be conceivable that a 20 watt PV panel might capture something like 0.0000584 watts (0.0000048 A @ 12V) under full moonlight; but I doubt that any of us will accurately measure it.
Gord I am sick of your blither blathering myopic views.


Thanks for confirming the mathís
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