HLG-185H-C1400A

[Beggie]

Hi guys. I have HLG-185H-C1400A driver. I want to use 4x cobs with this driver. What would you suggest ?

 

[wwwillie]

Hi guys. I have HLG-185H-C1400A driver. I want to use 4x cobs with this driver. What would you suggest ?

What do you have in mind?

 

[Beggie]

Cree or Citizen ? And which models ?

 

[Beggie]

Or Bridgelux. I had bridgelux but in an accident i lost my cobs, thank god driver is ok. I wanna rebuild it.

 

[wwwillie]

OK now we're talking!!
I looked up the data sheet. We have 1.4 amp to deal with and 171 volts. Now we need a combination of COBs that will fit those numbers. This is the fun / pull your hair out bit. Also my weak spot. But...
CLU048-1212 80CRI Here is a 36 volt capable of handling 2.7 amps. 4x36 = 144 so the volts fit. Now that should add up to about 50 watts each.
How does that sound?

 

[Beggie]

Is it possible to use 5 cobs ? Or would you recommend it ?

 

[wwwillie]

It's all physics man. In general we need to meet the forward voltage requirements of the chip as stated by the manufacturer. What that boils down to is this. The driver has so many volts to give out. We need to make sure that we use as much as we can but not all of it. The forward voltage of a chip is the amount of volts it needs to light, if it doesn't have enough it won't light. So with this specific combination we have 36 volt chips and a driver that has 171 volts to give out. So we want to have as many as as we can but not go over. 4x36=144 5x36= 180, so chances are great that 5 will NOT fire with this combination.
This is only for wiring in series, sorry did not want to confuse the issue with series and parallel wiring. Series is also considered safer for simple set-ups.

Now that you know, I hope I was clear enough. You can check out data sheets and see what fits.

 

[Beggie]

PRODUCT PRICE QUANTITY TOTAL
× BJB holder for Citizen CLU048 series and Luminus CXM22 $2.50 $10.00

× LEDiL Angelina reflector for BJB Holder (Citizen CLU048) $5.50 $22.00

× Citizen CLU048-1212 80CRI GEN6 - 3500K Gen 6 $14.75 $59.00

× Arctic thermal pads for Citizen CLU048 series $1.00 $ 4.00

What do you think ?

 

[wwwillie]

Looks like a nice light. Heat sinks next...

 

[Dr.Bubbles]

No thermal pads. They SUCK. And how did you end up with a driver before cobs?

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