I've been looking around at LED drivers on ebay, and most if not all of them say the voltage is x-y (24-32 for example). I was curious as to what this means, can anyone explain it for me?
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LED Driver Question
- Thread starter Jalabenjo
- Start date
LED drivers are constant current, the voltage will change to meet whatever you plug in to it (as long as it's in range)Jalabenjo said:
it's not adjustable
EXAMPLE:
buy a 750ma 30-40v driver
my 10w leds run great at 750ma...
White is 3v
blue is 3v
red is 2v
So to get in the drivers range i need to add leds(in series) until i'm in the range...
so can do like 10 blue.. or 13 white... or 20 red (etc i hope you get the point)
.+1 juanitos
Let me give another example. I've got a 2.2 amp driver with a voltage range of 36 -48. Based on that current the data sheet says the LEDs use (drop) a little more than 3.2. I want to get as many LEDs as possible. 15*3.2=48. Since that is the highest voltage the driver provides and the data sheet showed a little more than 3.2 required voltage I'll go with 14. 3.2*14=44.8. Within the range
Let me give another example. I've got a 2.2 amp driver with a voltage range of 36 -48. Based on that current the data sheet says the LEDs use (drop) a little more than 3.2. I want to get as many LEDs as possible. 15*3.2=48. Since that is the highest voltage the driver provides and the data sheet showed a little more than 3.2 required voltage I'll go with 14. 3.2*14=44.8. Within the range
I don't use Drivers.
I use resistors,computer power supplies and a regulator-LM 315(17?) or whatever I need,several Lm's work.
NOT the most efficient way to run any LED.
BUT I want every wave length a single 1 Watt LED can produce.
I use every voltage that will MAYBE be as close to the light PEPPERS need-400nm to 700mn.
I use Chinese LEDS.
Only a VERY few have fried in all the time I've used them.
Most fried when I drove them at the Max.
I grow on shelves for starts that I want bushy and to put out a few pods (pure) them everything goes outside.
Wayright knows his stuff.
Do what your grow needs.
I LIKE 1 watt LEDS -FOR MY USE!
Been using them for years.Both stars and 10mm LEDS.
MY grow is MY grow.
I do not have a grow like several other people need.
I want to get pure seeds from my plants-1 big pod OR several small pods.
I have no clue as to a total indoor grow for production lighting is needed.
I do what works for MY grow.
I'd NEVER build my own drivers IF I was growing for commercial production of pods.
NOT EFFICIENT AT ALL.
LM's waste too much stuff by heat alone.
Also eat up 3+ volts each.
On my 49-50 star panels that puts my lighting close to Fluoros.
I just get control of the wave lengths I want on my shelves-what works for me.
Ma= brightness,Volts = wave length.
I use resistors,computer power supplies and a regulator-LM 315(17?) or whatever I need,several Lm's work.
NOT the most efficient way to run any LED.
BUT I want every wave length a single 1 Watt LED can produce.
I use every voltage that will MAYBE be as close to the light PEPPERS need-400nm to 700mn.
I use Chinese LEDS.
Only a VERY few have fried in all the time I've used them.
Most fried when I drove them at the Max.
I grow on shelves for starts that I want bushy and to put out a few pods (pure) them everything goes outside.
Wayright knows his stuff.
Do what your grow needs.
I LIKE 1 watt LEDS -FOR MY USE!
Been using them for years.Both stars and 10mm LEDS.
MY grow is MY grow.
I do not have a grow like several other people need.
I want to get pure seeds from my plants-1 big pod OR several small pods.
I have no clue as to a total indoor grow for production lighting is needed.
I do what works for MY grow.
I'd NEVER build my own drivers IF I was growing for commercial production of pods.
NOT EFFICIENT AT ALL.
LM's waste too much stuff by heat alone.
Also eat up 3+ volts each.
On my 49-50 star panels that puts my lighting close to Fluoros.
I just get control of the wave lengths I want on my shelves-what works for me.
Ma= brightness,Volts = wave length.
smokemaster said:
this is the least efficient and most complicated way to do it
everything juanitos said is corect
on a side note if your voltage requirement is a bitty bit too high the driver will lower the current until the volts are in range(its a bit touch and go but if your string is like 1or 2 volts over it will be fine)