Got a problem here, hope someone can help me with.
I just got this 1W HIGH POWER LED.
http://brigatti.nl/contents/media/l_l-hp1pwn.jpg
And I tried to hook it up to this LED DRIVER.
http://www.proaudiomusic.nl/contents/media/l_ledtrf08.jpg
When I turn it on the LED starts to blink, instead of just burning constantly.
Like in this video: - YouTube
Anyone know if I did someting wrong?
Video.MOV (500 KB)
Do you have a datasheet for the LED?
This is all I can find about it.
post the part number, the link only opens the country selection page.
I tried
L-HP1WW
and nothing is coming up.
That is in fact the part number.
Try this link.
Hey CR, don't set a country, just leave it at the default Belgium and just continue, it will pull up the page.
Okay, that works.
1st question - what do you have for a heatsink?
•warning: not to be used without additional heatsink
I don't really have a heatsink. I put it on an upside down old speaker just for now.
But I don't think that's the problem, cause it instantly starts to blink.
It gets hot. Even that brief moment.
Another possibility is that it's overloading the driver which is shutting down. But if it's the recommended one, then why is it doing that. Doesn't make much sense.
Could it be that the output voltage is too high?
freekvdbroek:
Could it be that the output voltage is too high?
Only if the driver is broken.
(Which it probably is, no other explanation makes any sense...)
Driver says 24V, 350mA. The LED you linked says it works at 350mA. So, technically it should be fine. So it's possible that it's a thermal shutdown. One thing you could do is add a series resistor to lower the amount of mA that the LED receives from the driver, bring it down to say 200 or 100mA, see if it continues to blink.
How many ohms should the resistor be?
KirAsh4:
it's possible that it's a thermal shutdown.
a) It's on a piece of metal and those things take a few seconds to warm up. It doesn't look like it stays lit long enough to get hot.
Simple test: Can you hold the LED in your hand or does it burn your fingers?
b) How does the driver know how hot the LED is? If the LED overheats and dies at 350mA, it's not the driver's problem.
Okay, I've put 2 6,8 ohm resistors between the driver and the led, and now I'm getting a constant light source.
So the problem must be in the driver right?
I believe I might have found the problem.
http://www.proaudiomusic.nl/contents/media/l_ledtrf08.jpg
On the driver it says Output Power: 4-6x1w
I think that means that you have to have a minimum of 4 leds attached otherwise the outputpower is too high.