Roger A. Shrubber
Well-Known Member
honestly, i'm thinking about combining them both. the only real difference is the dispersion of light. a QB has the same or close to the same number of diodes a cob has, but the cob focuses light on one point, while the qb spreads that light out over the whole plant from different angles so you get the best penetration possible from that amount of light.i'm thinking of making a QB with a hole in the center to install a cob in.
its not that a qb produces less heat than a cob, again, its dispersion. the cob has all the diodes packed as tightly together as they can have them, and require a large heatsink and usually a fan. the qb produces the same amount of heat per wattage (all lights do) but they're all spread out, they have the mass of the pcb to absorb some of that heat, and the sinks get rid of the rest faster than a cob, purely because of surface area.
again, power depends on how you drive them. don't think of a qb and a cob as two separate things, think of them as the same thing in different configurations. they're l.e.d.s on pcb boards, the biggest difference is how far apart they're mounted on that board.
