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Series And Parallel


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#1 SC00BY

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Posted 16 April 2004 - 10:48 PM

I never got the difference between leds in series and parallel. i looked at some pics but they look confusing. and wuts better for lighting a jewel

#2 snakeboarder

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Posted 16 April 2004 - 10:53 PM

http://physics.bu.ed...s/Circuits.html

I would wire them in parallel.

I did wire in some speakers in a series one time and they sucked so I did it parallel and they slammed. I just think of that when im wiring shit up.

#3 IITangoCrazy

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Posted 16 April 2004 - 10:59 PM

For sure parallel when you wire in series you they all draw off the same voltage and they will not be as bright. if you wire them in series the same voltage will go thorough each one it is a much better way of wireing.

#4 SC00BY

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Posted 16 April 2004 - 11:27 PM

alright. i should wire them in a parallel. now the problem is i still dont get how to wire them. how do i kno if im wire them in a series or parallel. is it in a parallel do wire 1 resistor before the leds.

n i have no idea how u wire a series.

im a newb when it comes to this

#5 thomes08

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Posted 16 April 2004 - 11:48 PM

it could work either way. I could probably draw you a good schematic if you tell me what voltage source you're using as well as the number of LED's. Also tell me the recommended voltage drop across each LED and the recommended current (this might be under I or current, and it will be labeled in mA probably)
That stuff should be on the LED package

thomes08

#6 snakeboarder

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Posted 16 April 2004 - 11:52 PM

Parallel is all the neg sides together and all the positive sides together.


Its not that hard. Wire all the LONG parts to the other LONG parts and all the short parts to the other ones on LEDS and then stick the ends to their pos - neg parts of the wiring and fire it up.

#7 SC00BY

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Posted 17 April 2004 - 12:05 AM

im gonna light the jewel so i guess im using teh power the runs to the hd.

8leds
3.3 voltage drop
20 mA

#8 thomes08

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Posted 17 April 2004 - 12:19 AM

i think you would be better off using 6 2V 10-20 mA LED's

If you run this off 12 volts...

IN SERIES you won't be able to drop 3.3V across all of the LED's, and if they're in parallel dropping 3.3V then you won't be able to get 20mA across each one. That's just some quick thinking there is a good chance i'm wrong it's friday night and i've already done 2 hours of HW and i'm drinkin a 40 (st. ides) so i'm losing motivation for the night
someone can think about that for me or i'll think about it in the morning

thomes08

Edited by thomes08, 17 April 2004 - 12:28 AM.


#9 snakeboarder

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Posted 17 April 2004 - 12:25 AM

Red is 5+ yellow is 12+

#10 thomes08

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Posted 17 April 2004 - 12:30 AM

just so he ^^ doesn't look dumb i asked what voltages are the yellow and red wires in a molex cable.... i edited my post after i had a different view on it

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#11 SC00BY

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Posted 17 April 2004 - 12:39 AM

so i should use 6 leds in a parallel of the 12v?

#12 IITangoCrazy

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Posted 17 April 2004 - 12:43 AM

i have a wireing diagram here man:

user posted image

#13 snakeboarder

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Posted 17 April 2004 - 12:48 AM

a 100 ohm resistor can handle that many leds? what is the max i know theres tuts for this but im too lazy/stupid to figure it out.

#14 IITangoCrazy

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Posted 17 April 2004 - 12:55 AM

yeah man i put that many on it works fine cuz it dosent matter how many leds u hook up when u r doing parallel

#15 thomes08

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Posted 17 April 2004 - 01:01 AM

ya it does doesn't it divide the current?

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