When making comparisons it is generally best practice to show the test subjects in the same situation. You start under your desk so show the rest in the same situation. Would be more informational.
I always use constant current limit at 80% nominal current to extent LED life due to LED light output tense to degrade pretty quick (don't know about new LED like this one)
You have to use a current limiter for LEDs! ALWAYS!!! otherwise they get hot. draw too much current. You get micro cracks in the silicon dye and the LEDs die! so ALWAYS use current limiting!
it is not normal that led's are hot because the reason they are supposed to be so efficient is because they are supposed to not heat up at all therefore i highly recommend that you add a resistor to your circuit or that you change the battery to a battery that has a weaker voltage.
you should deffinitely run some resistors in line with those leds. the reason they are getting so hot is that LEDs have a very low internal impedance so it is basically like shorting out the battery on the LED. if you put like a 110ohm 10w resistor, it will have them run cooler with the same brightness
@rctesty Hot enough to burn wood? I was looking at them to put on a some sort of night flier. Maybe I will anyway, it would be sorta cool to fly an RC fire ball..
When making comparisons it is generally best practice to show the test subjects in the same situation. You start under your desk so show the rest in the same situation. Would be more informational.
AsylumET 1 month ago
I always use constant current limit at 80% nominal current to extent LED life due to LED light output tense to degrade pretty quick (don't know about new LED like this one)
dvh065 5 months ago
You need to have an LED Driver Dude!, you can get them on ebay for like 5$.
Take this one if you want to run them on a 3s lipo:
Just search on ebay: 10W LED Driver DC8-26V
RobinnTech 7 months ago
uuuummmmmmmmmm
andreiprimu 8 months ago
You have to use a current limiter for LEDs! ALWAYS!!! otherwise they get hot. draw too much current. You get micro cracks in the silicon dye and the LEDs die! so ALWAYS use current limiting!
sk7ca 1 year ago 2
it is not normal that led's are hot because the reason they are supposed to be so efficient is because they are supposed to not heat up at all therefore i highly recommend that you add a resistor to your circuit or that you change the battery to a battery that has a weaker voltage.
jbohbot1 1 year ago
you should deffinitely run some resistors in line with those leds. the reason they are getting so hot is that LEDs have a very low internal impedance so it is basically like shorting out the battery on the LED. if you put like a 110ohm 10w resistor, it will have them run cooler with the same brightness
jenius8477 1 year ago
how to calculate heatsink demantions for leds? i have 10W too but i dont know how to effectively cool em damn
girlsdancewhiskey 1 year ago
Are they so hot they would melt foam?
jsnhart 1 year ago
@jsnhart hotter
rctesty 1 year ago
@rctesty Hot enough to burn wood? I was looking at them to put on a some sort of night flier. Maybe I will anyway, it would be sorta cool to fly an RC fire ball..
jsnhart 1 year ago
Try some CPU heat sinks - CNC pin aluminum - makes them heavier - and I mount them with Arctic Silver Epoxy.
kydawg1 1 year ago
really cool
marcoso94 1 year ago
"Holy crap who turned on the sun!" rofl
MrCokeinator 1 year ago
Nice :-)
Skydive4ever 1 year ago