- Thread starter BlackD.O.G
- Start date

we can't answer how dense the photons will be without knowing how much space they are spread out over

we can't answer how dense the photons will be without knowing how much space they are spread out over

How about a 4x4 and a 3x3 space

Its from this thread https://www.rollitup.org/t/diy-cob-led-calculator.890214/

All credit goes to bggrass for making it and SupraSPL for the data behind it.

16 SQ.FT. CANOPY 94% EFFICIENT DRIVER @11 CENTS PER KWH

Total power watts at the wall: 519.15

Cobs power watts: 488

Total voltage forward: 349

Total lumens: 89080

Total PAR watts assuming 10% loss: 247

Total PPF: 1148.55

PAR watts per sq.ft.: 15.44

Cob efficiency: 56.34%

Power watts per sq.ft.: 30.5

Voltage forward per cob: 34.89

Lumens per watt: 182.54

Download the tool, you will love it.

Math was never a good subject in school, I will look into that. 772 is a great number for 4x4 tho huh

16 SQ.FT. CANOPY 94% EFFICIENT DRIVER @11 CENTS PER KWH

Total power watts at the wall: 519.15

Cobs power watts: 488

Total voltage forward: 349

Total lumens: 89080

Total PAR watts assuming 10% loss: 247

Total PPF: 1148.55

PPFD based on canopy area: 772.68

PAR watts per sq.ft.: 15.44

Cob efficiency: 56.34%

Power watts per sq.ft.: 30.5

Voltage forward per cob: 34.89

Lumens per watt: 182.54

Download the tool, you will love it.

Its a better PPDF than a 600hps in the same space so cant complain!Math was never a good subject in school, I will look into that. 772 is a great number for 4x4 tho huh

This is the very same tool you asked about earlier today on another thread. Enjoy playing with it. Its as addictive as crack.

WEED. Its as addictive as ________ .

But Weeds not addictive its just so damn good nobody wants to stop...WEED

>