is it possible that using power directly from solar pannel to led or low watts tube lights ? kinldy guied.?

Is it possible that using power directly from solar pannel to led  or low watts tube lights ? kinldy guied.?

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luxstar5 years ago

To go directly off a solar panel you should run the current through a voltage regulator since solar panels can panels put out quite a bit more voltage than the are rated at with no load or a small load. Over 17 volts in direct sunlight with a small load. You might try a 7812 regulator or a 317T adjustable regulator. Running at 12 volts you can run 4 leds in series. You will also need a current limiting resistor in series. For the small low power leds You need to limit the current to 20 milliamps or less.

If you are going to use the solar panel to charge a lead acid battery you can use the 12 volt regulator to make sure that you do not overcharge the battery. This works for a small 5 watt or possibly a 10 watt panel.

For larger panels you will need to connect the solar panel to a charge controller and the charge controller to the battery. They make these specifically for solar panel / lead acid battery set ups. I have a 20 watt panel that charges an old car battery that is no longer capable of starting a car but it works great for running LED lighting. I am using a charge controller to charge the battery. I have been running leds 24/7 connected to this battery for a couple of years.

Here’s more:

 

 

 

http://forums.armageddononline.org/threads/25155-Under-100-watt-Solar-Panels

 

 

ritnish (author) 5 years ago
yes In my workshop i am running 6 tubeslight of 40 watts day and night so if I use energy directly from solar light is it possible for day purpose as in night i can use alternative power
canucksgirl5 years ago
Usually the solar panel charges a nickel cadmium type battery so that the lights can be used when the sun has set. So, is it possible to run the lights without the battery? I would think yes. Is it really practical? No not really... You probably want the lights to work when there is no sun right?
ritnish (author)  canucksgirl5 years ago
yes In my workshop i am running 6 tubeslight of 40 watts day and night so if I use energy directly from solar light is it possible for day purpose as in night i can use alternative power
rickharris5 years ago
If all you need is to light a dark place in the day time then light tubes work really well.

Otherwise your looking to charge batteries.