Quote:
Originally Posted by Dennis
I assume that in calculating the power rating of the 120 Ohm Resistors, which look like they should be ¼ Watt, I should only be using the current flow of each LED (20mA) in the P=IV calculation, not the overall circuit current of I = 6x20mA = 120mA?
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That's right Dennis. 120mA. Your 6VDC 800mA plug pack will be fine.
If you're electrically challenged, use
this online LED calculator. It'll draw you a picture
and give you various details about the parallel circuit.
You can do it like freespace mentioned and it will work but not recommended (sorry freespace). It's unreliable having LEDs directly in parallel with each other - which is why you never see them in circuits like that. LEDs need their own current limiting resistors.