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#Post#: 5--------------------------------------------------
Whole House lighting off 12 volts
By: admin Date: March 14, 2013, 8:43 am
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There seems to be a lot of interest in an off-grid lighting
system. Here is a short video about a very efficient lighting
circuit that runs off 12 volts. It will run CFL's LED's and
incandescent, but LED's are by far the most efficient. 30 LED
bulbs can be run off this system which is more than enough to
light a small home. I will make this available at
www.lynxwind.com. It mounts near the battery, and is much safer
than household AC.
HTML http://youtu.be/rGzcchs_Bwo
HTML http://youtu.be/rGzcchs_Bwo
#Post#: 15--------------------------------------------------
Re: Whole House lighting off 12 volts
By: sjh7132 Date: March 18, 2013, 9:35 pm
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I'd be interested in seeing an experiment where you have XX
watts of solar panels and YY watts if LED lights. Just leave
the lights on 24/7 and measure battery voltage before and after
1 week. (at night when there is no solar input). It would be
interesting to see with how many watts of lights you break even.
I realize you won't normally leave lights on 24/7 but we could
extrapolate to 2 or 3 hours a night or whatever we think we
might use.
#Post#: 16--------------------------------------------------
Re: Whole House lighting off 12 volts
By: admin Date: March 19, 2013, 7:38 am
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Great idea. I can do that. It may tell you as much about
Michigan weather as the efficacy of the circuit and bulbs. I'll
start today charting the voltage.
Started this morning, it is snowing and overcast, two 6 watt LED
bulbs running. 8:30 am March 19, 60 watt solar panel faces ESE
on a 30 degree slope (not ideal)
Voltage before turning on the lights 12.92 vdc
Voltage after turning on circuit 12.80 vdc
#Post#: 22--------------------------------------------------
Re: Whole House lighting off 12 volts
By: admin Date: March 19, 2013, 9:17 pm
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Tonight the voltage was 12.27
very cloudy, cold, windy, snowy
lights still apparently bright
#Post#: 23--------------------------------------------------
Re: Whole House lighting off 12 volts
By: admin Date: March 20, 2013, 9:13 pm
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Tonight at 10pm the voltage was 12.15 vdc It was very cold,
windy and cloudy with snow. Earlier in the day voltage was
12.59 so there was some charging.
Update - March 21 - 9pm voltage 11.95, very overcast, snowy and
damn cold - happy spring!
March 22 - 9pm voltage 11.51, very overcast, snowy, damn cold
again! Losing hope that spring will come.
March 23 - 10 pm voltage 11.47, very overcast, cold, not as
cold...maybe spring will come.
March 24 - The lights were on brightly still this evening at
9pm, checked the voltage and it was 7.30....What, check
again....yes 7.30 volts. That was it, turned off the lights.
Today was cloudy and cold.
So two 120 volt LED bulbs ran for 7 days off the 12 volt battery
with about 4 hours of sun on just one day. Not sure what
scientific value this has in regards to the circuit or its
efficiency without knowing how many watts came in from the sun
through the clouds and snow.
The circuit is interesting in that it adjusts the load, I am
sure at 7.30 volts it was starting to pull more amperage. This
battery has been abused on many of my experiments for years so I
am not too concerned with damage to the cells. I have a couple
clever charging circuits that can revive just about anything.
#Post#: 911--------------------------------------------------
Re: Whole House lighting off 12 volts
By: crazyguy Date: November 29, 2013, 10:19 am
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I would be interested in two things :
1. what the battery specs are.
2. Do the same experiment with ljlsc version.
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