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07-06-2006, 07:39 AM #11Junior Member
LED grow lights... input please.
Ok what I have now is 80 Red in series of 5 with 3 660nm and 2 630nm per series, I also have 3 blue per series, then alternate them 400, 432, 400,432. So for each breadbord I have 80 Red with 68ohm resistor per series and 15 blue w/ 68ohm resistor per series . Each breadboard put's out 7.7w of red, and 1.2w of blue.
Here is the power breakdown.
Red per breadboard:
* each 68 ohm resistor dissipates 27.2 mW
* the wizard thinks 1/4W resistors are fine for your application Help
* together, all resistors dissipate 870.4 mW
* together, the diodes dissipate 6880 mW
* total power dissipated by the array is 7750.4 mW
* the array draws current of 640 mA from the source.
Blue per breadboard:
* each 68 ohm resistor dissipates 27.2 mW
* the wizard thinks 1/4W resistors are fine for your application Help
* together, all resistors dissipate 136 mW
* together, the diodes dissipate 1080 mW
* total power dissipated by the array is 1216 mW
* the array draws current of 100 mA from the source.
Total for project:
Red total: 480 red, 288 @ 660nm, 192 @ 632nm
* each 68 ohm resistor dissipates 27.2 mW
* the wizard thinks 1/4W resistors are fine for your application Help
* together, all resistors dissipate 2611.2 mW
* together, the diodes dissipate 20640 mW
* total power dissipated by the array is 23251.2 mW
* the array draws current of 1920 mA from the source.
Blue total: 90 blue, 45 @ 470nm, 45 @ 400nm
* each 68 ohm resistor dissipates 27.2 mW
* the wizard thinks 1/4W resistors are fine for your application Help
* together, all resistors dissipate 816 mW
* together, the diodes dissipate 6480 mW
* total power dissipated by the array is 7296 mW
* the array draws current of 600 mA from the source.
23251.2 mw x 7296mw = 30w of LED power, should be equal to a 250-350w HPS?
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