Introducing CobKits.com - specializing in DIY and Citizen COBs

CobKits

Well-Known Member
ill try to take some measurements in a 3x3 tent. i think it would give good coverage at 24"

for your 6 sq ft tent 2x1825 light engines at 110W each (2100 ma) would be great- like with an hlg240h-c2100b
 

G84

Well-Known Member
@CobKits
first, thank you for your help and support from pm
second, have you ever considered to sell also 3w led for enhancing spectrum( deep red/far red,royal blue)?
Every diy will find anything from one shop=less problem with shipping,order everything in 1 shot,saving on shipping cost.
You win,we wins,everybody wins :bigjoint::bigjoint::bigjoint:
 

CobKits

Well-Known Member
nice! i figured as much

i hope to be ordering many more!

got any recs for dissipation on these? basically anything bigger than 1/4x 1" aluminum bar should handle it, right?
 

welight

Well-Known Member
nice! i figured as much

i hope to be ordering many more!

got any recs for dissipation on these? basically anything bigger than 1/4x 1" aluminum bar should handle it, right?
will depend as always what current you plan to run them at, but yes 1 inch bar should do it, ideally something like extruded finned rail would be best but depends what will be most cost effective
Cheers
Mark
 

CobKits

Well-Known Member
well im gonna run them on the softer side. is there a place on the pcb for temp measurement, or what do you normally do with single diodes?
 

welight

Well-Known Member
well im gonna run them on the softer side. is there a place on the pcb for temp measurement, or what do you normally do with single diodes?
I use a FLIR thermal imager but there are fiducial marks on the board so you could solder a thermocouple to one of these, what do you usually use for temp measure?
Cheers
Mark
 

CobKits

Well-Known Member
I usually just go by manufacturers data or estimate temp by back calculating voltage/lumen droop

any recs on good decent type J or K thermocouples to solder to boards?
 
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