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J57ltr · 11:05 PM

That's exactly how I have done my heatsinks and it works great I just used 1 at the end that was a 4 5/8" square fan thermister controlled (ended up just shorting it out because it just wouldn't run fast enough for the application). Mainly a fan at 1 end because it's easier to bend. I have a ACAD pic I drew up but I can't remember how to capture a screen shot(edit: nevermind). I have it setup with 2 fans on 1 end.

As far as constant current you must add in the more parrallel resistance in order to keep the current constant. You could use a window comparator to turn on a fet or relay to switch in more resistors. I have a line on some .001 or .01 ohm resistors that are like 100W or 75W same style but bigger.

Jeff

	(#2)
J57ltr RC-Monster Aluminum Offline Posts: 610 Join Date: Feb 2009 Location: Tomball/ Houston Tx.	07.20.2009, 10:38 PM That's exactly how I have done my heatsinks and it works great I just used 1 at the end that was a 4 5/8" square fan thermister controlled (ended up just shorting it out because it just wouldn't run fast enough for the application). Mainly a fan at 1 end because it's easier to bend. I have a ACAD pic I drew up but I can't remember how to capture a screen shot(edit: nevermind). I have it setup with 2 fans on 1 end. As far as constant current you must add in the more parrallel resistance in order to keep the current constant. You could use a window comparator to turn on a fet or relay to switch in more resistors. I have a line on some .001 or .01 ohm resistors that are like 100W or 75W same style but bigger. Jeff Attached Thumbnails The Warnings & Cautions discussed in this manual cant cover all possible conditions/situations. It must be understood that common sense and caution are factors which cant be built into this product. Last edited by J57ltr; 07.20.2009 at 11:05 PM.