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Just add all your loads and you see how much you need. Might want to have some safetymargin for the fuses. Here is a cheaper option for controll with pwm dimming. It has 8 channels so you can run 2 drivers per channel. https://growgreenled.wordpress.com/ You will also need 5v relays with...

Are you going to controll them leds with something? If you start them all at once the inrush current will be 70x12=840 amps! Meanwell says max 3 drivers on a 16amp breaker type c. The old school porslin breakers are not that sensitive to inrush currents but starting them one by one is prob a...

I will give it a go Yeah thats the concern but I will check it out. I have some one dollar chips from china to try on. i hope most of the heat will be transfered to heatsink and it should cool down very fast. Will try with a leadsolder that melts at 182c. Just have to get a small propane torch

I did some research and it seem pretty easy to solder. Just need a hot heatgun or a torch and melt a ball of solder on a non oxidated surface where you want chip. Them just add the chip with fluss on it. A non acid type fluss so one doesnt melt the electronics :) Should make a great connection...

Btw has anyone here tried to solder on the cob on heatsink? I know CPU manufactors solder the ihs on cpus sometimes. Would be neat to just solder them on without any holes and tapping. When chip dies just heat it up and remove.

Yes there is heat dissipation and there is heatstorage capacity. Much mass equals lots of heatstorage capacity but it also has to transfer from heatsink to air. Heat travels upwards so one has to think about that in design.

Awesome value I want some too :=) I think you use that 0.357 oC/W this way: Heatwatts=aprox 60% of 50W=30W then 0.357x30+roomtemp(25)=35,71 Heatsink temp

It was a while ago bit i think it was around 60-65c at 2A, but it was a warm summer day with no moving air so If you blow on them they will cool off very much. I wanted to try in the worst conditions and it was prob over 30c in room. A thing to think about is that they have holes but not...

Impossible to say without data I guess. I run a vero29@75W on a Mechatronix ModuLED mega 134100 heatsink and it gets very hot. It's a hassle to passivly cool things with decent temps. Why passive cooling? A extruded bar heatsink with fans gets awesome cooling capacity and are much cheaper...

OK but it also says in the datasheet "Dielectric Withstanding Voltage: 500V AC" I interpreted that as the isolation strenght. The DC voltage should be even higher than AC I believe. But maybe that is just for current leaking?

Im no mastergrower but Im going to run 4 cobs per bar @1050 and 3 bars. Driven with 2 hlg-240-c1050b. I think this will be a very energy-efficient way to illuminate 4x4 and the hlg-240 are pretty cheap. If I want more light I can add 1 bar making it 16 cobs but I doubt I need it. I also have to...

Isnt the current and voltage related? I mean if it can handle [email protected]=364 it should handle [email protected]=229

Im confused. Its says my vero 29 holders can take 130V 2.8A. Then I should be able to run 6 of them at 36.4V @1.05A? Edit: And here it says they can handle 300V. lol http://www.molex.com/pdm_docs/sd/688014226_sd.pdf

Hello, much tnx for the calculation, I've been suspecting this but couldn't get the calculator to work. I already got the vero29s, Citizen had some weird re-seller rules here in EU. I got the veros for 24$. On my present experiement space (22" x 22") 100W seems perfect. I have four 3590s dimmed...

Im gonna check it out havent ordered them yet. Can vero 29s fit on all kingbrite pinsinks? its says 3590 on most of them on alibaba page. The shipping from China or USA must be a pain in the ass compared to within EU as I got on the bar heatsinks. By boat is cheap but takes forever.

Around 15" from plants.Yeah I really dont like soldering and I already got the connectors. Its says this in datsheet for ezmate: Voltage (max.): 130V Current (max.): 2.8A‡ Contact Resistance: 20 milliohms Dielectric Withstanding Voltage: 500V AC Insulation Resistance: 100 Megohms ‡ Pending...

Yes but @ 0.7amps Its 300w and the voltage fits. But my ez-mate connectors seem weak, only 130v, but I wonder if that is a problem at that low current. I could solder them but I guess Its a better choice to use 2 driver and the ez-mate connectors. I dont like to run them at 1.4 since Its so...

Hello. Im planning on building a light for 4x4 using 12 vero29 4000k@700ma. I hope Its sufficent light with less problem with lightbleach and I can have them about 20" from canopy. Can I can run them on 1 Meanwell hlg-320-c700b? My main concern is the solderless connectors (pico ez-mate)that...

Hey folks I'm planning on building one of these. http://isoulscience.com/2015/06/pyramid-garden-system/ Have found/got everything except the white board. I have looked at foamed PVC and it seems to be good for this. What is normally used for these big reservoar systems? I don't want to use...