Q1- So i have a selection of different coloured LEDs all in the 3w flavour. Mainly rated for around the 750ma max, i'm thinking about what driver to buy, shall i get the 700ma or the 500ma. This is for a aquarium within a small space. LEDs will be stuck onto 22mm copper end caps, these will be painted with high temperature paint to eliminate any electrical shortages. They are emitter only and do not have the PCB heat spreader and will be attached to there own end cap via thermal epoxy. These will have air flowing over but more of a gentle breeze from left to right so i would be inclined to call them passive. Do you guys think i'm pushing it with 700ma with temp/lifespan?
Q2- My calculations show at 500ma i will be using around 21w, i feel the 25w is to close for comfort so was going to get the meanwell apc 35-500 or 35-700. So i'm going to put these in series, please double check on this as my brain is fried at the moment, and as the different colour LEDs have different forward voltages connect the ones that draw the most first, closer towards the power supply?
Q3- One last question do i still need a resistor for this set up as i thought the resistor was only for running in parallel or where a constant current is not supplied??
Regards
Q2- My calculations show at 500ma i will be using around 21w, i feel the 25w is to close for comfort so was going to get the meanwell apc 35-500 or 35-700. So i'm going to put these in series, please double check on this as my brain is fried at the moment, and as the different colour LEDs have different forward voltages connect the ones that draw the most first, closer towards the power supply?
Q3- One last question do i still need a resistor for this set up as i thought the resistor was only for running in parallel or where a constant current is not supplied??
Regards