Hi all: I am wanting to install some led thingys in my computer case. However, I want these to be "always on", and am going to use a separate pc power supply for them.
Anywhere I have looked on the internet, it is said that you need to ensure that you use a resistor with the led's. However, there are many manufacturers who make various led light configurations for use in a computer caase that do not appear to have any resistor(s).
I have purchased several led's for my computer, which come pre-wired with molex connectors. These simply plug into the normal pc power supply. Usually they have only two of four pins in them, and these are the ones that mate to the 12v supply from the transformer. There is no resistor in these (I have taken one apart to see). So, my question is, why do these led's not need a resistor?
Thanks.
Anywhere I have looked on the internet, it is said that you need to ensure that you use a resistor with the led's. However, there are many manufacturers who make various led light configurations for use in a computer caase that do not appear to have any resistor(s).
I have purchased several led's for my computer, which come pre-wired with molex connectors. These simply plug into the normal pc power supply. Usually they have only two of four pins in them, and these are the ones that mate to the 12v supply from the transformer. There is no resistor in these (I have taken one apart to see). So, my question is, why do these led's not need a resistor?
Thanks.