Diy led
- Thread starter flworkd
- Start date
flworkd
New member
flworkd
New member
no i do not use any resistive load/fuse
I did 10 LEDs in series and 8 in parallel string
rogergolf66
im an addict lol
awsome going to look through this thread!!!!
brassmonkyballs
BMB
wow Jae....you came over to the darkside
you really should put fuses in there though...cheap, easy, and if nothing else saves you from having to replace 80 LEDs as opposed to just 1 or 2.
USF Nealio
Go Bulls!
I'm also very interested in building my own LED fixture. Put me down as interested in a future group buy.
wow Jae....you came over to the darkside
you really should put fuses in there though...cheap, easy, and if nothing else saves you from having to replace 80 LEDs as opposed to just 1 or 2.
BMB - How many FEDY LEDs can I run on a 185-42B? I was planning on running 7 strings of 11. That work? Or do I need to bump it to 8 strings to drive around 650ish mA?
brassmonkyballs
BMB
7 or 8 is fine...as is 11 in series. don't have the spec sheet handy but I believe its 4.4A so 550ma-650ma.
Been following along on this thread, but trying to help a friend out......
They are in the process of building their fixture now. They are using the HLG 240-48B drivers. Leds are XP-G's and XR-E blues and RB's. They checked continuity on the leds and such, and all appears fine. When the wire the driver in, the first LED shows a short????
When they fired the unit, it did light. When they went to dial the pot up it blew the fuses. Where should we start checking?
They are in the process of building their fixture now. They are using the HLG 240-48B drivers. Leds are XP-G's and XR-E blues and RB's. They checked continuity on the leds and such, and all appears fine. When the wire the driver in, the first LED shows a short????
When they fired the unit, it did light. When they went to dial the pot up it blew the fuses. Where should we start checking?
brassmonkyballs
BMB
first of all...if the 1st LED shows a short...why was the fixture powered up? did they clear it, was it shorted, what was it short to? how do they know it was shorted?
2nd thing is...without telling us how that 240 is wired, number of strings, how many in a string there is no way to know if something else is wrong.
Shorts are a bad thing though and will cause failures or in this case fuses popping. too few LEDs in a string or too few strings will cause the same thing provided the output per string is more than the rating of the fuse. The good news is those fuses saved a bunch of LEDs!
Provide some more info please if you would like some feedback from the gang here.
BTW...they won't be happy with the dimming on the 240 unless its a new manufacture Aug 2011 or later. The early ones did not dim below 50%.
Ok - that is what I was coming up with as well.
I think it is 4.2A, but I'm not sure. I'll go confirm that.
Sorry for lack of info.....
They are running 6 strings, with 12 LEDs in each string. I'm not quite sure how they really determined the first led was shorted or not???? Not physically there. Other than they did a continuity check, and did the battery test to verify each led lit. The only facts I know is that when the checked LEDs with no driver attached they all checked fine connection wise. After the driver was wired in and rechecked is when they are seeing the first led is "shorted". What would be the proper step/check to verify the connection once driver is wired in?
I'm pretty positive they have the newer version of the HLG driver but can double check with them on that.
They are running 6 strings, with 12 LEDs in each string. I'm not quite sure how they really determined the first led was shorted or not???? Not physically there. Other than they did a continuity check, and did the battery test to verify each led lit. The only facts I know is that when the checked LEDs with no driver attached they all checked fine connection wise. After the driver was wired in and rechecked is when they are seeing the first led is "shorted". What would be the proper step/check to verify the connection once driver is wired in?
I'm pretty positive they have the newer version of the HLG driver but can double check with them on that.
brassmonkyballs
BMB
They should check continuity not only of each connection but also each connection to their heatsink. If there is continuity between the LED and heatsink its a short and needs to be cleared.
6 strings should be fine but will yield just under 1 amp per string. If they are using 1 amp fuses and they have that one LED shorted it may have opened that string and it will be near instantaneous that the rest of the strings go.
So check each LED to the heatsink for shorts 1st.
Did any one con help me i try tu geth 100 18k led , i try msg them from website no response , i send 2-3 msg nothing happend no response at oll aim in US any one con point me the right directions vhere i con aorder them from or any one have 100 18k led for sale pm or respond pleasehelp thank you.
You HAVE to be kidding me.:headwalls:
reeferdale
New member
blesk, I would try it all over again at least 1 more time, maybe they had a difficult time getting your message?
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