Need Help for my DIY Led light

[matashi]

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The fans are so style, bringing out the young days back in me
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Loving the water ripples caused by the fans

I understand shadow's point of view, as I have a similiar situation in my previous diy set up. Slowly 1 by 1 the led start to burn out. Probably next round of diy I'll try led drivers instead. In the meantime need time to slowly source for a cheap high voltage driver to go for higher wattage led set in the future.

Having loads of fun starting from scratch and work all the way to a working lightset is freaking awesome feel. I'm sure all DIY fanatics agree


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[Shadow]

Cannot agree with you fully. If you connect all your LED:
-In series, if one blow all the rest of the working LED will also be turned off. Since it is no longer a close circuit. No over loading.

Not for high power led, 3w, 5w and others will sort circuit when fail.

[limsteel]

Dont think you can find higher Voltage Drivers. LED is DC, High DC is very dangerous compare to AC.

More specifically, peak voltage greater than 42.4V is hazardous; voltage less than or equal to 42.4V, or SELV (safety extra-low voltage), is non-hazardous. It is difficult to know when electricity can cause serious injury or be fatal. Contact for only 1 to 3sec with currents of only 6 to 200mA can cause electrocution by disrupting the normal rhythm of heart muscles, resulting in fibrillation and leading to death

Quoted from:
http://www.ednasia.com/article-7565-...imer-Asia.html
All varies from person to person .. it is very individual ..


Shadow, i donno about your circuit. I burnt a few LEDs but when I tested others in series still working when connected to a power supply. I am using 1w , 3w , 5w and now 10w

[limsteel]

You can use a LM317 IC to wire a constant current circuit. I did that but find it unnecessary.

Now i salvage my old PC PSU stripped out all the useless 5V supply, and other wires. You can see in the pics only yellow and black cable. And also shorted the Power On.

[AQMS]

Do you have cover for the led to prevent water splashing?

[matashi]

I don't have a splash guard. I'm more worried about the water evaporation though. Hence the fans also serve a purpose to provide more air circulation


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[Shadow]

Shadow, i donno about your circuit. I burnt a few LEDs but when I tested others in series still working when connected to a power supply. I am using 1w , 3w , 5w and now 10w

That interesting, I connect 12 led in series with LED driver, like pic below only with 12 LEDs instead of 3. After about 2 years 2 of the LEDs spoiled but the other 10 LEDs still light up. Both spoiled LED tested short. maybe it is part to part or vendor to vendor variation, mine are from CREE.

[limsteel]

We are both right...

Quote: Point 4 last sentence, "A burnt LED can have either a short or open circuit."

Read more : http://www.ehow.com/how_8605617_tell...ght-burnt.html

[matashi]

Dont think you can find higher Voltage Drivers. LED is DC, High DC is very dangerous compare to AC.

More specifically, peak voltage greater than 42.4V is hazardous; voltage less than or equal to 42.4V, or SELV (safety extra-low voltage), is non-hazardous. It is difficult to know when electricity can cause serious injury or be fatal. Contact for only 1 to 3sec with currents of only 6 to 200mA can cause electrocution by disrupting the normal rhythm of heart muscles, resulting in fibrillation and leading to death

Quoted from:
http://www.ednasia.com/article-7565-...imer-Asia.html
All varies from person to person .. it is very individual ..

I wonder what kind of circuit are those in high power LED sets like razor maxspect?

[limsteel]

LED are parallel connected. Lower Voltage but draw high current safer.

Power = Volt x Current.
48W = 48V x 1A or 12v x 4A

So you can run the same led with a 12VDC source. Rather than a more dangerous 48VDC source.

[seudzar]

Also when connect led in parallel, 1 led burns will not cause other led to black out.

[matashi]

LED are parallel connected. Lower Voltage but draw high current safer.

Power = Volt x Current.
48W = 48V x 1A or 12v x 4A

So you can run the same led with a 12VDC source. Rather than a more dangerous 48VDC source.

So far I found those with higher than 10A adapters come in bulky metal casings. Is there any way to build high power LED lightset without those bulky adapters? High power like 160W to 200W


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[seudzar]

High current mean high wattage, component used to make them are larger and they dissipate lots of heat which some requires metal casing to help dissipate off the heat.

[Shadow]

If you need 200w led, you should consider flood light. Much easier to DIY just need connect cable to 240v main supply. You may need to think of way to hang it. They come in 10w, 20w, 30w, 50w and 70w.

Honestly to wire 3w led to get 200w is very big job even with 5w led is like 40 leds to wire

[limz_777]

So far I found those with higher than 10A adapters come in bulky metal casings. Is there any way to build high power LED lightset without those bulky adapters? High power like 160W to 200W


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good thing about led is everything can be wire up near powerpoint , making the light set sleek , doesnt really matter if adapter is big

[matashi]

If you need 200w led, you should consider flood light. Much easier to DIY just need connect cable to 240v main supply. You may need to think of way to hang it. They come in 10w, 20w, 30w, 50w and 70w.

Honestly to wire 3w led to get 200w is very big job even with 5w led is like 40 leds to wire

Floodlights are more focus on 1 area, maybe can try dismantle floodlight and re-wire them space apart, using the same adaptors and circuits. saving trouble

I'm not afraid to wire, just afraid it won't work properly

[matashi]

good thing about led is everything can be wire up near powerpoint , making the light set sleek , doesnt really matter if adapter is big

trying to conserve space at my electrical area, too many plugs and adaptors are too messy. If only there is a super slim high Amp adaptor around to integrate with the heatsink, just like off the shelf high power led fixtures.

[Shadow]

Floodlights are more focus on 1 area, maybe can try dismantle floodlight and re-wire them space apart, using the same adaptors and circuits. saving trouble

What I mean is LED floodlight, something like picture below which I used for my 1.3ft tank. The beam angle is 120 degree, so not really focus on 1 area. You can use couple of them and hang each of them at some distance to cover your whole tank.

[matashi]

ImageUploadedByTapatalk1424142915.559613.jpg
Super power 12V adaptor and don't look so ugly


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[limz_777]

sometimes picture look small , actual size might be , any idea what size is it ?