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Christmas Lighting
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11
comments (11 topical)
Re: Christmas Lighting
(
3.00 / 0
) (
#2
)
by
LEXX
on Sun Nov 28, 2004 at 09:57:54 PM MST
I think what nando is trying to say is this: If you have a string of lights that needs a certain amount of current then your resistance has to be of a certain value. If you have cut out 45 of the 50 lights then then voltage across each one will be 10 times as high as it should be and the current will also be 10 times as high resulting in a POOF! What you need to do is measure the resistance across the 5 LEDs that you have remaining, lets say for the sake of arguement that it is 10 ohms, that would mean that you need to have a 90ohm resistor for a total of 100 to get the voltage and current to the proper level. like he said a resistor in the 150 ohm range would be big enough for sure but it might be too big, just measure the resistance out, multiply by 9 and that will be the value of the resistor that you need. Remember that resistors create heat as their way of dissapating energy so don't cover them with anything very flammable, it will only be a very small amount but still, be on the safe side.
LEXX
Christmas Lighting
|
11
comments (11 topical)
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