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Originally Posted by neweuser
How do you solder them would be good info to pass. i would but never used them, but may help him too. And thanks Squee for the E!:018:
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Diodes look like
this. See how one end has a little silver band? That's the cathode, or negative side. You just hook them up like you would batteries; end to end.
+- +- +- +- +- +- +-
The power input would come in on the left and the load hooks to the right. Each one drops about .7v. There are other better ways to drop some voltage, but this is easiest IMO. Another simple way is to use a resistor, but the amount of voltage dropped depends on the current draw of the fan.