What power supply and wiring setup should I use for an LED lighting fixture? Answered
I'm trying to build a light from LEDs. I managed to pick up 40 Bright white LEDs for $4 and want to put them all together into one light fixture. I know a bit about electronics, but I'm stumped on what kind of power supply I should build and how I should wire them. They are 3V 20mA. When building it should I multiply the voltage or the amperage? And should I run them in series or parallel? Any help would be appreciated. And please don't just give a "Do this" answer. I'm looking for more of "Do this because this is how it works." Thank you.