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Low Earth Orbit
Lighting & Electrical
Lighting up a sign (project)
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<blockquote data-quote="Rob Timmerman" data-source="post: 43519" data-attributes="member: 172"><p>Re: Lighting up a sign (project)</p><p></p><p>What's currently in the sign for light? If it's the typical 4x 4' fluorescent tubes, LED probably won't be a cheap option.</p><p></p><p>I think you've probably underestimated the size solar panel you'll need, as if your plan is for the sign to run all night, you need more than double the solar panel capacity that the load would indicate (8 hours charge for 16 hours runtime). And that's not taking into account the need for margin to account for indirect sun or overcast days and the efficiencies of the power conversions.</p><p></p><p>Have you considered using a couple of marine deep-cycle batteries (similar to car batteries, but more appropriate for your application), charged up in the store and swapped out at the sign as needed?</p></blockquote><p></p>
[QUOTE="Rob Timmerman, post: 43519, member: 172"] Re: Lighting up a sign (project) What's currently in the sign for light? If it's the typical 4x 4' fluorescent tubes, LED probably won't be a cheap option. I think you've probably underestimated the size solar panel you'll need, as if your plan is for the sign to run all night, you need more than double the solar panel capacity that the load would indicate (8 hours charge for 16 hours runtime). And that's not taking into account the need for margin to account for indirect sun or overcast days and the efficiencies of the power conversions. Have you considered using a couple of marine deep-cycle batteries (similar to car batteries, but more appropriate for your application), charged up in the store and swapped out at the sign as needed? [/QUOTE]
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Lighting up a sign (project)
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