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Old 04-26-2012, 12:10 AM #1
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Default Where did i mess up?

So i just checked out this driver i installed. Its a round driver set at 500mA and im using it for a 445nm c6 build. When i tested to see if it worked nothing happen. Then i noticed the pill got really hot. Did i solder the hot too close to something? Is my driver a gonner?


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Old 04-26-2012, 12:13 AM #2
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Default Re: Where did i mess up?

Check if the driver isn't short-circuiting against the pill. Get the drive out and measure it again with a testload.
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Old 04-26-2012, 12:21 AM #3
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Default Re: Where did i mess up?

If you do what blord suggested and it is still alive, try wrapping the driver in electrical tape on the side that makes contact with the pill's sides near potential shorts. Also, if you can, I would suggest maybe some slight (very slight) heat sinking if it isn't too much trouble. At 500mA I don't really see a need for it, but if you accidentally short it again, it may heat up and kill your driver before you realize what's happened.
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Old 04-26-2012, 12:23 AM #4
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Default Re: Where did i mess up?

wow, looks like i need a new driver. No way to tell but by how hot it was im sure its fried. I noticed somehow when inserting the driver i clipped the + wire, it was snug up against the pill. Here is a pic. Its on the lower left at the base of black wire.


Ill try that now

Last edited by TacoHerder; 04-26-2012 at 12:23 AM.
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Old 04-26-2012, 12:40 AM #5
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Default Re: Where did i mess up?

I don't know, I've F'ed with a fair amount of drivers (spending my free time testing and RE-testing them while waiting for my first diode to come in) and the linear buggers can take some heat. You might still have a functioning driver. I'd still suggest testing it and heat sinking in case it happens again. Just my two cents.
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Lasers!:
405nm 100mW~ in an Altoid's tin. Probably looks like a detonator to everyone else, because they give me scared looks when I have it out in public...
405nm 125mW~ PVC Host
445nm M-140 Diode in a C6 pushing 1.62A
532nm 5mW~ DX Laser
635nm 5mW Laser Pen (no clue where I got this one)
635nm Mits diode looking for a home that Lazeerer is soon going to provide in the form of his Small Sun kit
660nm 250mW~ Labby(now dead, working on making a better portable lab-style that you can see in this thread)


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Old 04-26-2012, 12:59 AM #6
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Default Re: Where did i mess up?

Just tried, it worked for about 1 second then died. This sucks, guess its bound to happen some time though
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Old 04-26-2012, 01:05 AM #7
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Default Re: Where did i mess up?

Aw don't worry dude. Looks like your driver could very well have short circuited when the positive made contact with the pill.

Ensure that the positive wire & capacitors are as far away as possible from the brass ring.

Better luck next time bud, failures lead to better creations
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Old 04-26-2012, 01:37 AM #8
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Default Re: Where did i mess up?

Quote:
Originally Posted by TacoHerder View Post
Just tried, it worked for about 1 second then died. This sucks, guess its bound to happen some time though
Typical failure mode for a driver unfortunately. I've had many drivers that will give a high power for a split second after turning on, them dimming right down to almost nothing.

The upside is your diode should still be OK - more expensive that a driver
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Old 04-26-2012, 01:38 AM #9
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Default Re: Where did i mess up?

Thanks. I would rather it be the driver than the diode at least.
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