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silverphoenix
Gawd
- Joined
- Feb 15, 2006
- Messages
- 780
I'm trying to see if I can run 64 3mm Leds off a usb port. Now the LEDs are rated at 3-3.3V @ 20mA, USB port can handle 500mA @ 5v.
Will splitting the circuit into 2 parallel circuits with a 10ohm 1/2watt resistor for each suffice to run each LED without drawing more than 500mA? I know this will drop the current flow through each LED to about 7ish mA but that is fine.
see my expert diagram drawn in Paint below
Will splitting the circuit into 2 parallel circuits with a 10ohm 1/2watt resistor for each suffice to run each LED without drawing more than 500mA? I know this will drop the current flow through each LED to about 7ish mA but that is fine.
see my expert diagram drawn in Paint below