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thanks for the advises i think guod's circuit is everything i need very usefull very cheap

i trying to find a dimmer 1-10v for meawell lpf-90d-42 but is to expensive i did not find anything under 45 e .is it any way to do it cheapper? bying some electronic equipment to make it my self meybe?

those are inverters!!! yaskava is a very good company how many watts are?they have many fuctions but most we use to power motors with soft start/stop and speed control.

thats true some drivers of maenwell have already pot but i can't see any pot in my model but it sais "built in dimming function"i cant uderstand if is talking about an internal dimable pot or the curciut of diimming fuction. thanks for your reply

sorry supra one more question...the driver that i will use is the meanwell lpf 90d 42. in the datashit sais."Using the built-in dimming function on LPF-90D can't turn the lighting fixture totally dark" is any dimmer switch /screw on the psu?

bridgelux has already a plastic cob holder (or somethink like that) thanks for the usefull tips!!

thanks for your help the only think i have to do is to drill the headsink to mount the cob with thermal paste of course

i think the best way for me is the pc heatsikns so i need only psu those 2...what can i use to power them?

thanks supra this is way better...do you know if they are sending with usps worldwide?

i see...i think that i will order the heatsinks only and i will adjust a 120mm that heatsink has 120mm mountinge holes already thanks for the advise

After a research for buying 2 heatsinks for 2 vero 29 i found these http://www.digikey.com/product-detail/en/NX300160/1061-1155-ND/4215392 which is suitable for my led's and i think in very good price 20$ each.But in the data sheet of manufacture is including a fan with the heatsink i dont know...

can you sugest me a heatsink size for 2 vero 29?

so...if the current output is bigger Vf becomes bigger too?

oops!!!!the writing of a stoned person....i will contact with them i think for my country there is no import taxes under 100euros so with 2 of theme i will be ok. Thanks for the advise

yes dicit 47 dollars was from jameco.com but is this site shipping world wide?

47dollars for one piece?mouser sold it 70e?strange

so i find this driver http://www.alibaba.com/product-detail/100w-led-driver-2400ma_737618664.html i think is the closest for this veros...or the driver that supra mention me...i'm between those 2 drivers...

So....maybe i have to find something with current output at 2.5-2.8 amps it could be better?...if i understand well...i'm elecrtrician...i'm not working with elecrtonics but i can figure it out... something like...

after a research i find this driver http://www.ebay.com/itm/100W-Watt-High-Power-LED-Driver-AC150V-265V-50-60HZ-DC20-40V-Waterproof-/400709083169?pt=US_Lighting_Parts_and_Accessories&hash=item5d4c1f6021 it is more expensive but it will power my led fully load...any thoughts about this driver?

so as i can see we dont have very big variety of led driver for those veros chips.But it seems a good driver and cheap.thanks supra i will wait your report to start my project. is it any problem to drive with 42v instead of 40? 10w less per cheep is it big deference or no?becuse sds you said in...