I am a high schooler with an interest in growing special plants.
I made this array of LEDs with each diode using 700ma and a voltage drop of 3.55V across each of them. The array has 30 of them in a 3x10 configuration powered by my variable lab bench power supply at 10.6V 7A and has no resistors whatsoever to control the current flow as I just vary the voltage supply to change the current.
Is it possible to power this array using a 12V 5A power supply from ebay without the need to add resistors to each series against voltage spikes? Also, because the power supply will be at 100% utilization if it works, it will be submerged in oil to help cooling.
If the ebay power supply wouldn't work what would you suggest I do?
Array with bulky cooling and 3D printed shroud:
LED array powered with low voltage:
The array will be wired something like this - but without the resistors: