Hi all
I have done extensive previous research into this but before I go ahead with my project I want to clear a few things up. I have attached a picture of my proposed design.
My questions relate to the driver itself, I am going to be running 28 5w red leds. They are ledengin and the specs as follows;
2.5v forward voltage
1A current
So based on them running in 7 strings of 4 leds. I have calculated that I will need 2.2ohm resistors and a 12vdc 7amp 140watt driver
But I'm unsure. Does the amps of the driver need to be increased by a factor of one for each parallel line added to the circuit? And also how do I know what wattage driver to use? If so this would mean a constant current driver for 7amps? But I can't find any that output that amount.
My final cicuit is going to include other leds too, but I was thinking to run these from a separate driver as their forward voyage and amps are different? So at the end I will be running 4 separate drivers for four lots of parallel led circuits. What would I need to power all 4 drivers or would each need to be power from 240vac independently. Or is there a driver out there that can do everything at once?
Any help is very much appreciated. Other than physics goes I know nothing! And that was long time ago so please if possible keep it to lamens!
Thanks guys!