...All Things Vero...

Would you consider buying a VERO after reading through some of the posts?

  • Total voters
    357
kmog33

kmog33

Well-Known Member
bobbuck said:
Yeah on the bridgelux sheets im seeing 156 l/w @ 500ma.
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That puts them closer to 48% efficient at 500ma. Should be around 50% at 350ma following its chart.

You could always spend a coup bucks more for the v22s and efficiency would jump quite a bit.


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Kevin the Great

Kevin the Great

Well-Known Member
kmog33 said:
That puts them closer to 48% efficient at 500ma. Should be around 50% at 350ma following its chart.

You could always spend a coup bucks more for the v22s and efficiency would jump quite a bit.


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The V22 has too much forward voltage for the drivers we have. Maybe 1 V22 and 2 18s per driver, but that's splitting hairs...
 
bobbuck

bobbuck

Well-Known Member
I'm trying to Figure out my heatsink sizes. I'd Like to do it passively. I want to do 3 bars with 3 cobs each that I can tie Together. So with the v18s @ 500ma and 48% efficiency, there is about 7.33 heat watts per cob that needs to be dissipated. So per bar I need a heatsink that can handle 22 watts bare minimum, and 30 watts if I wanted to up the light count to 4 per bar. Does this sound right? If I'm thinkin correctly the heatsink profile really does not need to be to large? Any input would help as I'd like to get an order together today!
 
Kevin the Great

Kevin the Great

Well-Known Member
bobbuck said:
I'm trying to Figure out my heatsink sizes. I'd Like to do it passively. I want to do 3 bars with 3 cobs each that I can tie Together. So with the v18s @ 500ma and 48% efficiency, there is about 7.33 heat watts per cob that needs to be dissipated. So per bar I need a heatsink that can handle 22 watts bare minimum, and 30 watts if I wanted to up the light count to 4 per bar. Does this sound right? If I'm thinkin correctly the heatsink profile really does not need to be to large? Any input would help as I'd like to get an order together today!
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The cheapest profile is $0.32 per inch. A 30 inch piece will dissipate 23 watts of heat passively. You'd need 3 of them, 90 inches, 28.80 before shipping and handling. The next cheapest option would be the 4.8 profile at .98 per inch and 1 36 inch piece would work passively. Doing it evenly, maybe 3 16 inch pieces would work better for you. That would handle just under 90 watts total.
 
bobbuck

bobbuck

Well-Known Member
Kevin the Great said:
The cheapest profile is $0.32 per inch. A 30 inch piece will dissipate 23 watts of heat passively. You'd need 3 of them, 90 inches, 28.8strait0 before shipping and handling. The next cheapest option would be the 4.8 profile at .98 per inch and 1 36 inch piece would work passively. Doing it evenly, maybe 3 16 inch pieces would work better for you. That would handle just under 90 watts total.
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Thanks for the info. I think ill go with the smaller profile and use active cooling for safety reasons. I ordered 3 v18s to play with first due to being stuck at work for the next two weeks strait. I accidentally ordered the 90 cri instead of the 80 cri. beSides l/w output is there a big disadvantage to the 90 cri? I'll be using them for a veg light. Thanks
 
nevergoodenuf

nevergoodenuf

Well-Known Member
Tinning flux is what is in the middle of the solder. It helps spread the heat faster. It is also what smokes when soldering. Have you noticed when there is no smoke, it is harder to solder. That is because all the flux has burnt off.
 
bobbuck

bobbuck

Well-Known Member
nevergoodenuf said:
Bob- you should be fine with the 90 cri. I have an area using 90cri and an area with 80cri, and I am having a hard time seeing a difference between the 2.
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Thanks. I'll probably incorporate them with the 80 cri when I build my flowering light. Do you run them harder due to the lower lumen output?
 
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