Does the current of a USB phone charger affect LEDs powered by it? Answered
Here's the story:
I was reading Instructables one day, and I had a BRAINBLAST. If I were to add ambient LED lighting to my room, a USB phone charger would be a relatively convenient power source! So I got to work.
However, while using online resistor calculators to determine the resistor suitable for this project, I noticed that they did not require the source current. This got me pondering.
So the question is: Does the source current matter?
2 USB phone chargers
Charger 1: 5V 1000mA
Charger 2: 5V 800mA
Resistor: 1.5ohm 2W Metal Film Resistor
LEDs in parallel
LED: 3.5V 25mA
Help would be greatly appreciated! :)