COB efficiency Spreadsheets

[bassman999]

I got a problem I'm trying to get 3 cxa 3590 to fire up on and HLG 185-1400 and no dice on two will light up when I try and wire the 3rd no dice. What give I'm pretty sure they are 3590 maybe they are 3070's but still 3 should light up right?

Sounds like you have a bad cob

 

[ttystikk]

Sounds like you have a bad cob

That's a corny excuse.

 

[bassman999]

That's a corny excuse.

I didnt get it at first, but looking at the cob the yellow bumps could be the corn on the cob.

 

[ttystikk]

I didnt get it at first, but looking at the cob the yellow bumps could be the corn on the cob.

Just need butter and salt.

 

[alesh]

I got a problem I'm trying to get 3 cxa 3590 to fire up on and HLG 185-1400 and no dice on two will light up when I try and wire the 3rd no dice. What give I'm pretty sure they are 3590 maybe they are 3070's but still 3 should light up right?

72V 3590s ?

 

[ttystikk]

72V 3590s ?

With a -1400B they'd have to be 36V chips.

 

[Bigdaddy212]

Sounds like you have a bad cob

Don't think so cause I can wire them up separately and they will all come on when I do a string the 3rd won't come on and I've got two bar with 6 cobs. With 2 185-1400B running each bar Very frustrating

 

[bassman999]

Don't think so cause I can wire them up separately and they will all come on .when I do a string the 3rd won't come on and I've got two bar with 6 cobs. With 2 185-1400B running each bar Very frustrating

I wonder if you have a bad driver?
I havent heard about bad drivers yet, but there have to be some by now I would think

 

[Bigdaddy212]

but 2 bad drivers man I'm at a brick wall with this one cause I'm changing my setup and the 1 185 was running 4 cxbs no problem

 

[bassman999]

but 2 bad drivers man I'm at a brick wall with this one cause I'm changing my setup and the 1 185 was running 4 cxbs no problem

To troubleshoot change one variable at a time using known good pieces.
I hope you figure it out

 

[CoB_nUt]

Do you have a pot hooked up? My resistor shook loose(bad soldering job on my first light,first time soldering!),and the cobs would flicker,not come fully on....etc. Prolly not your issue,just thought I'd toss that out there.

 

[CoB_nUt]

Don't think so cause I can wire them up separately and they will all come on when I do a string the 3rd won't come on and I've got two bar with 6 cobs. With 2 185-1400B running each bar Very frustrating

Ahhh nevermind. Didn't read the first unread post. 6 cobs? Only 4 36v will fit on that driver. CXB's and CXA's that is. Eh.... I think I'll go back and read what you have instead of just blindly guessing...wake n bake rosin is a no-no. Makes you want to respond and help too much. Lol I'm out.

 

[pop22]

sounds like a driver issue according to specs you should be good at roughly 110 volts and 155 watts

 

[alesh]

With a -1400B they'd have to be 36V chips.

He said 3 of them wouldn't work while 2 would. That's exactly what the 72V version would do.
I'd measure Vf across the COBs when 2 are connected. If it's ~71.5V you know what's wrong.

 

[ttystikk]

He said 3 of them wouldn't work while 2 would. That's exactly what the 72V version would do.

Aha! A very good point!

 

[Baura]

Hello guys,

Long time since i don't ask anything here....

I was making my own calculations based RIU-Efficiency SpreadSheet and Citiled Tool SpreadSheet.

I need some guidance, I just wanna know if i made any big mistake and if I can trust this data:



Cheers!!

 

[Baura]

Hello guys,

Long time since i don't ask anything here....

I was making my own calculations based RIU-Efficiency SpreadSheet and Citiled Tool SpreadSheet.

I need some guidance, I just wanna know if i made any big mistake and if I can trust this data:
View attachment 3869772


Cheers!!

Ohh, the 3590 is CD bin.

Cheers

 

[MishaGrower]

Hello guys!
What is the best option of 5000K 70CRI COB?
CXB3590-N0B-DB-50E
Or
BXRC-50C10K1-D-74
Or
CLU048-1818C4-50AL7K3

It would be great to look the comparison in SpreadSheet.

I want to make a light this config: (2*5000K + 2*3000K on the first driver for veg(~200watts))
+
(660nm + 730(~5%) on the additional driver for flower(~80watts))

Is this excess capacity or not for 1m² tent? Both drivers are dimmable.

Thanks in advance!

 

[frica]

Hello guys!
What is the best option of 5000K 70CRI COB?
CXB3590-N0B-DB-50E
Or
BXRC-50C10K1-D-74
Or
CLU048-1818C4-50AL7K3

It would be great to look the comparison in SpreadSheet.

I want to make a light this config: (2*5000K + 2*3000K on the first driver for veg(~200watts))
+
(660nm + 730(~5%) on the additional driver for flower(~80watts))

Is this excess capacity or not for 1m² tent? Both drivers are dimmable.

Thanks in advance!

Probably the new Vero v7 or 1818. But the differences are all small. Except that the Cree cob is clearly the most expensive.

It's enough for 1m^2.

Normally 30-50watt per square foot is recommended (330-550 per m2)
But with those cobs you can get away with 20 watt per square foot.

 

[Bigdaddy212]

He said 3 of them wouldn't work while 2 would. That's exactly what the 72V version would do.
I'd measure Vf across the COBs when 2 are connected. If it's ~71.5V you know what's wrong.

Yep they had to be 72V because I got some 36v and they fired up no problem what the hell am I going to do with those cxa 3070 72v any ideas? thanks