Hi,

I need some help.
I’ve finished my children’s study/gaming room. I’ve wired two IC led strips (gamming scenario) and one led string (for reading). All this works on 12V.
I’ve bought an 100W Eaglerise us-100-12 to power all of this. The IC led string uses about 36W max. The led string is about 36W max.
AC 230V input ->Eaglerise 12V output -> 3 led controllers WiFi (one for each string.
After testing it all works fine.
I’ve selected the two IC strings to play a different pattern (dim and light up leds alternately) and dimmed the other one to 1%.
After a bit the power supply exploded.
tested the other room with the same design and the same happened.

Can this be a bad design power supply?
I think the power supply isn’t short. I’m draining about 60% of it power.
Am I doing something wrong?

 

So, you have 3 strips total...correct?

The one you dimmed to 1% can still be pulling full current for short periods of time if the dimming is PWM.

Same thing for the other two.

Also, the power needed for the 3 controllers.

 

So, you have 3 strips total...correct?

The one you dimmed to 1% can still be pulling full current for short periods of time if the dimming is PWM.

Same thing for the other two.

yes, 3 strips.

Two IC leds with each one with their own controller. 1,5m long each one. About 12W/m.
one strip with own controller. 1,5m long. About 18W/m.

maths: (1,5x12)x2 + 1,5x18=63

not even close to the 100w power supply.
Am I wrong??

 

Ok, I read it as 36 watts per string.

Is the power needed by the controllers considered in your calculations?

Of course, the supplies could be crappy as you suspect.

 

Ok, I read it as 36 watts per string.

Is the power needed by the controllers considered in your calculations?

Of course, the supplies could be crappy as you suspect.

No, each IC strip is 1.5m long. About 12W/m. As it, 1,5x12=18W
The other is 18w/m. 1,5x18=27

63w total.
the controller, measured now, is about 90mA. 12x0.09=1,08W.

 

No, each IC strip is 1.5m long. About 12W/m. As it, 1,5x12=18W
The other is 18w/m. 1,5x18=27

63w total.
the controller, measured now, is about 90mA. 12x0.09=1,08W.

The power supply e Constant current, since the strips are constantly dimming, do I need a constant voltage power supply?

thanks

 

The power supply e Constant current, since the strips are constantly dimming, do I need a constant voltage power supply?

thanks

Yes of course constant voltage Powe supply
Can you draw simple circuit of how you connecting the system?

 

The power supply is Constant Current.
since led stripes have their own led current limit resistors, definitely my problem is on CC PSU right?
It should be constant voltage, should be?

I’m looking for mean well LRS-150-12!
Can I go wrong with this one?

 

Yes of course constant voltage Powe supply
Can you draw simple circuit of how you connecting the system?

above, you have the drawing.
Thanks

 

Ok the power supply must be 12v, constant voltage and with power capacity more than the strips capacity
I see they are connected in parallel, so for the length you have for each led you calculate the Watt or as you have calculated at post 5
So total power consumed by led equal power from each one added together
you need similar power supply

Try read this

https://www.waveformlighting.com/ho...ose-a-power-supply-for-your-led-strip-project

Regards

 

Ok the power supply must be 12v, constant voltage and with power capacity more than the strips capacity
I see they are connected in parallel, so for the length you have for each led you calculate the Watt or as you have calculated at post 5
So total power consumed by led equal power from each one added together
View attachment 341384you need similar power supply

Try read this

https://www.waveformlighting.com/ho...ose-a-power-supply-for-your-led-strip-project

Regards

hi, thanks for your reply. Don’t get me wrong, but I understand all of that basics. If you read the earlier posts, all of that math are there.

My problem is, since the PSU is constant voltage instead what I’ve said on a post back, why I blown away?
Maybe the circuit isn’t ready to power the two RGB IC led stripes and one 6000k led strip?
Does the constant rapid fluctuation of the Current blew the PSU?

 

Does the constant rapid fluctuation of the Current blew the PSU?

if the ampere consumed by the led strips bigger than that led driver capacity, it will blow
can you send photo of the led driver you use?, or specifications?, so we can look?

 

Does the constant rapid fluctuation of the Current blew the PSU?

That is a possibility.

 

if the ampere consumed by the led strips bigger than that led driver capacity, it will blow
can you send photo of the led driver you use?, or specifications?, so we can look?

the ic led drivers are capable of drive 144W each. The other one is capable to drive 72W.
what have blown was the PSU, not the drivers. Drivers are ok.

That is a possibility.

Do you think that? I will buy separate PSU. One for each driver.

 

Repost

 

I’m looking for mean well LRS-150-12!
Can I go wrong with this one?

Should easily handle all 3 strips.