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- Dec 13, 2010
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I'm building a 445nm pseudo-labbie right now that runs on 4 3.7v 18650's.
Basically, I want to include a fan to blow air through my diode's heatsink and its driver heatsink (I'm going to power it with a linear driver).
I have a couple fans on me right now, but they're all either 12v or 24v. I'm thinking about using a 12v fan, which means I need to wire the batteries in series.
The problem is, I think that ~15v would be a little much for the laser driver.
Should I put a couple of diodes on the driver to drop the voltage a little or something? Or is it just fine as-is when properly heatsinked?
Also, do I need to build some sort of driver for the fan? If so, would a simple LM317 linear driver suffice? (It's a 170mA fan, btw.)
Sorry guys, I'm no electrical major. :thanks:
Basically, I want to include a fan to blow air through my diode's heatsink and its driver heatsink (I'm going to power it with a linear driver).
I have a couple fans on me right now, but they're all either 12v or 24v. I'm thinking about using a 12v fan, which means I need to wire the batteries in series.
The problem is, I think that ~15v would be a little much for the laser driver.
Should I put a couple of diodes on the driver to drop the voltage a little or something? Or is it just fine as-is when properly heatsinked?
Also, do I need to build some sort of driver for the fan? If so, would a simple LM317 linear driver suffice? (It's a 170mA fan, btw.)
Sorry guys, I'm no electrical major. :thanks: