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Author Topic: will this be ok  (Read 3003 times)

Offline whitetop

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will this be ok
« on: February 20, 2011, 12:04:17 PM »
since ive got really nothing till i move home i cannot check this would this lamp work for my desk just made with pcb wizard just want to build one so i can dress it up :huh:
dont say buy one as i dont want to.

ive put here cos i cannot find a general mod area

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Offline jrfhoutx

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Re: will this be ok
« Reply #1 on: February 20, 2011, 03:19:43 PM »
add resistors and I think you'd be good
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Offline crazy-modder

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Re: will this be ok
« Reply #2 on: February 20, 2011, 03:26:59 PM »
Whats the voltage requirements on the leds? I bought some badass 5mm leds that are 12v. They are incredibly bright.
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Offline whitetop

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Re: will this be ok
« Reply #3 on: February 20, 2011, 03:27:25 PM »
i have one abit like this but not compact and dont use resistors. ill keep telling my dad to bring the multimeter up as i cannot do much with out it.
Post Merge: February 20, 2011, 03:28:14 PM
Quote from: crazy-modder on February 20, 2011, 03:26:59 PM
Whats the voltage requirements on the leds? I bought some badass 5mm leds that are 12v. They are incredibly bright.

well pcb wizard says 5mm
« Last Edit: February 20, 2011, 03:28:14 PM by whitetop »
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Offline geraldrubalcava

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Re: will this be ok
« Reply #4 on: February 20, 2011, 10:24:23 PM »
here is a awesome article you would love. as usual i suggest you putthem in parrallel-series. and always add a resistor :)

http://www.horrorseek.com/home/halloween/wolfstone/Lighting/litlpo_PoweringLEDs.html
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Offline whitetop

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Re: will this be ok
« Reply #5 on: February 21, 2011, 03:25:46 AM »
thx for the link

would be nice with a resistor but why if theirs none on my other one?
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Offline geraldrubalcava

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Re: will this be ok
« Reply #6 on: February 21, 2011, 08:49:07 AM »
well its advised to use a resistor. so the led wont burn out as quickly. but hope the led website helps out :)
« Last Edit: February 21, 2011, 12:18:15 PM by geraldrubalcava »
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Offline Famas

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Re: will this be ok
« Reply #7 on: February 21, 2011, 02:20:38 PM »
yea when im wiring in parallel to 5mm leds im guessing white i use anything from 100 ohm resistors to 330 if you want them the brightest possible i use 100 or 150 ohm but for safety i use 330 and on the pcb make sure instead of the wire coming off you have to square terminal connections then you can just use a pcb drill and youll be good to go best of luck for my office lamp i used about 6 white leds and it was great
and im guessing youll be using 12v dc





admin mm- this is not entierly correct.
« Last Edit: February 21, 2011, 03:56:43 PM by modded matt »
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Offline Modded Matt

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Re: will this be ok
« Reply #8 on: February 21, 2011, 03:45:30 PM »
ok, I doont know how to keep stressing this until everyone gets it. resistors are not guessng games, and if you want a brighter led, buy the correct one, dont over power it. there is a reason it is called ohms LAW and not ohms maybe....

you need to use the correct resistor forthe correct condition.

@gerald, that site is a great read, I recomend everyone reading this has a look at it

@wite top, I wuld assume there is a transformer of some sort on the power supply limiting current somewhere.
« Last Edit: February 21, 2011, 04:00:08 PM by modded matt »
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Offline whitetop

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Re: will this be ok
« Reply #9 on: February 21, 2011, 04:48:47 PM »
my other plugs right into my pc's usb ive looked on ones abit like mine and they use a 100k resistor  but ill read that link just dont get how i made the last lamp and forgot how i did it lol
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