[RE-wrenches] Low light panel

[Warren Lauzon]

If the source is a light bulb or similar, no it cannot be done at all. If 
the source was something like a very heavily clouded sky, or twilight in the 
Arctic, it could be.

A 23 watt CFL puts out around 1200 to 1600 Lumens. So to get the wattage 
needed (.7 amps @ 15 volts), you would need a panel that is about 2000% 
efficient.

-----Original Message----- 
From: Nathan Jones
Sent: Thursday, February 03, 2011 4:02 PM
To: re-wrenches at lists.re-wrenches.org
Subject: Re: [RE-wrenches] Low light panel

We built a display for a Science Center shining a 350 watt halogen bulb onto 
a 20 watt module. We could get .4 amps out of the 12 volt panel. No matter 
how large the array it can't be done with 60 lumens because the light 
disperses at the same rate that the array surface area increases.
Nathan Jones
Power Source Solar
417-827-0738

On Thu Feb 3rd, 2011 4:27 PM CST Warren Lauzon wrote:

>Physically impossible unless you have about an acre for panels.
>
>-----Original Message----- From: Carl Adams
>Sent: Thursday, February 03, 2011 2:18 PM
>To: RE-wrenches at lists.re-wrenches.org
>Subject: [RE-wrenches] Low light panel
>
>Hello Wrenches,
>
>I'm looking for a panel which will provide
>0.7A at 12-20V
>with only a 60 lumen light source for the irradiance source
>
>With REgards
>Carl  Adams
>SunRock Solar LLC
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