Confused with a LED driver

[och]

I bought a LED driver, and I can't comprehend how it works. Here's a picture of the devices.



http://tw.bid.yimg.com/ac/65/20/f28691961-ac-3156xf5x0400x0400-m.jpg


See Rule #3 Do not Hot Link images - Norm


It says "Sec: 3-15VCD 330mA Pout:5W" and it also says "OUT DC12V"

There is not ajustment for voltage. I don't understand if this is a constant voltage driver with constant 12VCD output or something else.

I've left the link to the image intact.
You need to re host the image on imageshack or similar.

 

[Foxx510]

I think maybe ignore the 12v out bit, and assume it's a 330mA constant current driver, up to 5w.

 

[pavithra_uk]

I think this driver has voltage limit to limit power output. when maximum output voltage 12V & current 330mA driver will limit maximum power output below 5W

that mean maximum forward voltage of LED(s) must be under 12V

 

[Foxx510]

The 15v max makes more sense with the 5w rating.

 

[Ctechlite]

You probably need to use 4-5 LED's in series.

 

[Foxx510]

You probably need to use 4-5 LED's in series.

Why? Surely it's just a standard 330mA driver, that can drive one or more leds up to 15v combined Vf.

 

[Ctechlite]

Because I am thinking that drivers of this type have a minimum number of LEDs required to run correctly.

 

[Ctechlite]

I blew up the picture, and took a closer look. My apologies for not being able to see the specs written on it, and not seeing it in the OP's frist post. I must have been out of my mind! :duh2: I missed the 3 in the part where it says 3-15vdc. I only saw the part that said 15vdc and thought it was like my Xitanium drivers by Philips which required a minimum number of LED's to work.

I believe you can just hook up one led that is capable of handling 330ma of input.

 

[och]

I'm probably going to test it with volt meter.

 

[howardch99]

I google the part number and found this LED transformer is made by a taiwanese company - Chu Mei.

On their website, they never say it is a constant current LED driver. Besides, all the Chu Mei products they suggested to use with this transformer are rated to use 12V input.

If it is a C.V. mode LED driver, why they specify the output as 3~15V? It is very confusing to me as well.