RGB LED - How many AMPS will my PSU deliver on 12v

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JCLO

JCLO

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Jan 13, 2014
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Hello all,

I have been scouring all over the interwebs and I still can't find a straight answer.
So I purchased an RGB LED strip that comes with a circuit board for color changing.
This circuit board can only take a max of 6AMPS.

I want to connect my PSU (via a 12V yellow/black cable mix) to this circuit board.
But I can't find if my PSU will not fry the whole thing by delivering too much powaaaa:

My PSU: SEASONIC SSP-750RT 750W
http://uk.rs-online.com/web/p/computer-power-supply/7817192/
Output Current 0.3 A, 2.5 A, 20 A, 62 A
Output Voltage +12, +3.3, +5, -12
What is this 62 A?!

What I need is 12V 2 or 3A

Any idea on how to achieve this?!

Thank you all so much for your help!
 
Solution
emdea22
Don't meddle with things you don't understand when it comes to electricity!
You have 62A(amps) on your +12v rail -> yellow + black = 12v rail/ red+black = 5v rail
You need to connect your strip to the correct voltage (12v i'm guessing ) the rest is up to the circuit. To make it clear:
Your LED circuit can handle 6 amps at 12v in terms of how many LEDs it can power BUT it will only draw 6 amps of power from the PSU MAX . So if the circuit board came with the LED strip as a whole you have nothing to worry about however if the control circuit is bought separately then you need to make sure that your LED strip doesn't need more than 6A @ 12v. It has nothing to do with the PSU hope i made myself clear.
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emdea22

emdea22

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Oct 25, 2011
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Don't meddle with things you don't understand when it comes to electricity!
You have 62A(amps) on your +12v rail -> yellow + black = 12v rail/ red+black = 5v rail
You need to connect your strip to the correct voltage (12v i'm guessing ) the rest is up to the circuit. To make it clear:
Your LED circuit can handle 6 amps at 12v in terms of how many LEDs it can power BUT it will only draw 6 amps of power from the PSU MAX . So if the circuit board came with the LED strip as a whole you have nothing to worry about however if the control circuit is bought separately then you need to make sure that your LED strip doesn't need more than 6A @ 12v. It has nothing to do with the PSU hope i made myself clear.
 
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Solution
JCLO

JCLO

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Jan 13, 2014
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If I don't meddle, I will never progress :) I built my rig from scratch and I intend on doing anything I can to learn more and be more knowledgeable :)

Yes, the circuit board came with the LED.
So If I understand you correctly, AMP is only a "max" value that can be drawn by the circuit if needed.
Therefore If I plug my MOLEX 12V - 62Amps onto my circuit board, the board will only draw 1, 2, or 3 amps it needs and go on about his own business with no damage or overheating whatsoever.
Is this right?
Thanks again for the answers! you guys are super fast and efficient! This community is amazing!
 
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emdea22

emdea22

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You are correct. The actual danger comes from doing things the other way around for example using a 30A Led strip on a 20A power supply -> this can overheat the PSU and/or kill it if it doesn't have the proper safeties
 
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JCLO

JCLO

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Jan 13, 2014
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Great!! thank you! Now I get it! My applause to you sir! Now I have to go about finding a Molex to 2.1 gridseed adapter because I don't really want to redo the soldering :)
 
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