> > I will drill some small holes for cool air intake on the sides and on >> top. > > The fan will be drawing out air from the bottom. I won't change that. With the heat dispersed, it will not be issue as it is in one concentrated spot. I am more concerned with the questions I have in mind from the original post, please.
Thanks, -Darin On Tuesday, October 7, 2014 8:18:59 PM UTC-5, Dman777 wrote: > > I have a 6 digit Nixie ZM5660 clock that I got from pvelectronics that is > beautiful and super cool. Everything is perfect about it. However, since it > is multiplexed there is one spot that has a very high concentration of > heat. I want to place a fan underneath the clock to draw out this hot air, > otherwise the life of the clock will not be as long as it will without the > heat. > > I will be taking dremel and drilling a large area underneath the case and > placing a fan against the case surface(outside of the case) to draw out the > hot air. I will then wire the 12v fan to the power supply connectors. When > done, I will be placing the clock case on two blocks so there will be about > 3 inches of area between the bottom of the clock(with the fan) and the > shelf it sits on. I addition, I will drill some small holes for cool air > intake on the sides and on top. > > A few questions come to mind, please: > > 1) The case is only 3/4 of inch deep. Should I go for a 2 inch fan or 1 > inch fan? Typically, a 2 inch fan will draw more heat out. But since* > there will only be able 3/8" of space between the fan and circuit board*, > I am not sure which would be more effective in drawing heat out. > > 2) The source of heat is in the center middle of the clock. If I place the > middle of the fan directly underneath the heat concentration, will that > heat just sit since it won't be above the blades but instead above the > rotor? Should the fan be off center to the actual heat concentration? > > 3) I would like a fan with a good ratio of not to loud but move enough > heat out. Not sure which would be a good cfm. > > 4) I don't understand why, the heat concentration is in the dead center of > the clock, but the source of what I think is the source of the heat...the > 7805 voltage regulator... is of to the side of the source of the heat > concentration area. > > 5) Do I need to worry about trace erosion from air flow and friction? On > my old Xbox I had the fan running high in it and one of the traces eroded. > > Here are some of the fans(Would like to stick with ball bearing) I have > been looking at. I am big fan of Sunon: > 1 inch: > > http://www.jameco.com/1/1/2967-kde1203pfb2-8-ms-dc-brushless-tubeaxial-fan-bearing-type-ball.html > > http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_1708465_-1 > > 2 inch: > > http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?refineValue=Ball&refineType=1&langId=-1&position=1&productId=1950446&refine=1&catalogId=10001&history=6fqaemmj%7CsubCategoryName~DC%2BBrushless%2BFans%5Ecategory~3715%5EcategoryName~cat_37%5EprodPage~15%5Epage~SEARCH%252BNAV%401bnairch%7Ccategory~371530%5EcategoryName~cat_3715%5Eposition~1%5Erefine~1%5EsubCategoryName~DC%2BBrushless%2BFans%2B%252F%2B2.00%2522%2B%252850mm%2529%5EprodPage~15%5Epage~SEARCH%252BNAV%40dnogx9g3%7CrefineValue~SUNON%5ErefineType~1%5Eposition~1%5Esub_attr_name~Manufacturer%5Erefine~1%5EprodPage~15%5Epage~SEARCH%252BNAV&sub_attr_name=Bearing&storeId=10001&ddkey=http:StoreCatalogDrillDownView > > Thanks, > -Darin > > > > > > > > > > > > > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/5d257e7b-2330-407e-ba00-147f62ee78f7%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
