Registered: February 2006 Location: Darlington Posts: 458
Sat April 21, 2007 4:45pm
where's the resistor?
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Quote:
Originally Posted by Fliphouse089
ouch man.... if you would consider a flat metal sheet with a 120mm hole slightly offcenter towards the right, and seven "expansion slots" to be better than you're girls ass.... you might want to reconsider you're dating practices...
leimrod 4.0ghz
Registered: October 2006 Posts: 831
Wed April 25, 2007 6:30am
If you have 4 LEDs in series that require 3 volts each, and are being fed a 12v supply you don't need any resistors.
i.e. 3v x 4LEDs = 12v's
Resistors are only needed to lower the volts getting to the LEDs. Plus LEDs can usually be overvolted anyway.
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sP00N 3.5ghz
Registered: June 2007 Location: Kentucky Posts: 648
Tue June 19, 2007 1:38am
usually you're supossed to wire leds to the 5 volt source and use a resistor to tune it down to 3volts and then wire them parallel instead of in a circle. If you do it that way the leds will last longer.
