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No, not without something to limit the current. You might destroy the transformer, the LED, or both.
Also, transformers are not rated in mAh, maybe it's mA. Is it just a transformer? Or is it a power supply?
The LED will get hot when operating at its rated power, it will need to be connected to a heatsink.
Tou can probably test it (the LED) by connecting it directly to a 9V battery. At 9V, the LED will not draw much current, but you should see a glow. Even if the LED is actually for a lower voltage, the 9V battery will not be capable of supplying enough current to damage it quickly (but remove the battery if the LED is very bright).
Also, transformers are not rated in mAh, maybe it's mA. Is it just a transformer? Or is it a power supply?
The LED will get hot when operating at its rated power, it will need to be connected to a heatsink.
Tou can probably test it (the LED) by connecting it directly to a 9V battery. At 9V, the LED will not draw much current, but you should see a glow. Even if the LED is actually for a lower voltage, the 9V battery will not be capable of supplying enough current to damage it quickly (but remove the battery if the LED is very bright).
Thank you for your answer,
I didn't gave you enough detail...
In fact it's a power supply. And the led isn't just a led. it's a flood light see here : http://i.ebayimg.com/00/s/MTAwMFgxMDAw/z/w2IAAOxyUgtTOOhj/$_57.JPG
So it already have an heatsink
I've been able to test it. I had a 9V power supply( that showed 15V ) i give it a try and it power the light correctly.
But just for my information, why does a power supply give more voltage then what is show on it? does the voltage drop when under load?
Thank you
I didn't gave you enough detail...
In fact it's a power supply. And the led isn't just a led. it's a flood light see here : http://i.ebayimg.com/00/s/MTAwMFgxMDAw/z/w2IAAOxyUgtTOOhj/$_57.JPG
So it already have an heatsink
I've been able to test it. I had a 9V power supply( that showed 15V ) i give it a try and it power the light correctly.
But just for my information, why does a power supply give more voltage then what is show on it? does the voltage drop when under load?
Thank you
davenn
Moderator
hi periag
welcome to the forums
if it is an unregulated PSU, then yes, it will have a higher no load voltage that will drop when a load is applied
for a "rule of thumb" ....
most unregulated PSU's will have a current rating lets say 500 mA (0.5A) and a voltage rating, say 12V
IF the load is drawing 500mA, then the output voltage will be 12V, it may be a bit higher if a lower current is being drawn or conversely a bit lower if a little more that 500mA is drawn
cheers
Dave
welcome to the forums
if it is an unregulated PSU, then yes, it will have a higher no load voltage that will drop when a load is applied
for a "rule of thumb" ....
most unregulated PSU's will have a current rating lets say 500 mA (0.5A) and a voltage rating, say 12V
IF the load is drawing 500mA, then the output voltage will be 12V, it may be a bit higher if a lower current is being drawn or conversely a bit lower if a little more that 500mA is drawn
cheers
Dave
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