Gandledorf
New Member
Lets say I have a power supply which provides me 12V @ 500mA. I wire an LED with a voltage drop of 3V, and a 10 ohms resistor. Assuming my LED can sustain a constant forward current in excess of 1A, what would happen? I'm attemting to draw 900mA from a 500mA source. Does it cap at 500mA? What is the behavior?
Under the same vein, say I have 12V @ 500mA supplied from a "power brick" connected to the mains. My project only requires 5V @ XmA. Is there a way to step down the voltage and step up the current?
Under the same vein, say I have 12V @ 500mA supplied from a "power brick" connected to the mains. My project only requires 5V @ XmA. Is there a way to step down the voltage and step up the current?