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Automotive LEDs...
Sinner:
I bought some automotive LED bulbs, and tested them on a PC powersupply...
One that has 12 superbright LEDs in it...they're red, and I think I'll be using it to light my trackball...
The others are dual superbright clears...I bought sockets for them too, and plan to have them in behind the rejector on the coin door...
Neither of these had amperage specs on the packaging, so I'm just guessing as to how I can hook these up...the LED clust has a resistor inside the casing and a diode (to block current from going the wrong way)...this one I connected on it's own, without an resistors, and it seems to be OK...the other ones, I tried with a 200 ohm resitor in line...
anyone know if this is an OK setup, or is there something I should know, before doing this??
Thank you,
Matt
Fat_Trucker:
Automotive LED's should be designed to work with 12v out of the box so should be ok to use directly with the 12v connection from a PC supply.
Sinner:
--- Quote from: Fat_Trucker on February 06, 2006, 09:18:24 am ---Automotive LED's should be designed to work with 12v out of the box so should be ok to use directly with the 12v connection from a PC supply.
--- End quote ---
I'm not concerened about the voltage, but more so about the amperage...if a lamp is rated for 12V and 5A, and I dump 12V at 25A through it, the lamp will most likely not like it...
I guess I should have looked and found a package of bulbs with more specs on the package...
Thanks for the reply though...
Teebor:
I wouldnt worry about the amp's coming from the pc power supply. I have seen people directly hook up a single LED to the supply and the LEd has been fine.
Or the other side of the coin if you are worried about damaging the power supply just buy one with a bigger rating
Sinner:
--- Quote from: Teebor on February 06, 2006, 09:48:16 am ---
I wouldnt worry about the amp's coming from the pc power supply. I have seen people directly hook up a single LED to the supply and the LEd has been fine.
Or the other side of the coin if you are worried about damaging the power supply just buy one with a bigger rating
--- End quote ---
Hmmm, OK...I have connected a 5V LED to the power supply (5V of the PS of course), with only a 100ohm resistor...it lasted about 2 weeks, and burned out...I have a 200ohm (might be 200K, I can't remember) and it runs 24/7 and has been fine for months...either I had a bad LED, or I was running too much current through it...
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