Date: Thu, 18 Sep 2003 14:58:46 -0500 From: Ray Bagby <ray@wrightwradio.com> To: Chris Pressey <cpressey@catseye.mine.nu>, freebsd-questions@freebsd.org Subject: Re: [OT] replacing fan with mismatched specs Message-ID: <200309181458.46612.ray@wrightwradio.com> In-Reply-To: <20030917174123.2845104d.cpressey@catseye.mine.nu> References: <3F68FBEF.3040807@potentialtech.com> <20030917174123.2845104d.cpressey@catseye.mine.nu>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wednesday 17 September 2003 07:41 pm, Chris Pressey wrote: > On Wed, 17 Sep 2003 20:27:27 -0400 > > Bill Moran <wmoran@potentialtech.com> wrote: > > This is terribly OT, but I'm asking here for two reasons: > > 1) I have no idea where else to ask > > 2) I know that someone on this list will know the answer > > > > Here's the problem. I have a switch that has a fan in it that failed. > > I need to replace the fan. It's a 40MM .22Amp 5V. > > > > I can't find a fan with those specs anywhere! The best I can find is > > a 40MM .13amp 5V. > > > > So, will that fan work? With the amp rating different like that, will > > the fan just burn out? Will it run just fine? I'm going to be really > > upset if I have to replace the entire switch because of one fan! > > > > Advice is appreciated. > > Disclaimer: I am not a certified electrician, but... > > Voltage and size are the same, so that's good. The remaining figure, > 0.13 amp, tells you how much current the component draws from the power > supply. Since 0.13 is less than 0.22, that means this fan draws less > power than the old fan. Which means that you should be able to replace > it without any danger of overloading your power supply (in fact your > power supply will have a slightly easier time with the new fan.) > > So, in short, yes, it will work. However, something to check would be > the RPM of the new fan versus the old one. A slower fan won't cool as > well, and that might lead to problems of an entirely different nature > (overheating.) > > -Chris > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to > "freebsd-questions-unsubscribe@freebsd.org" -- Chris is right on almost all counts. Lower current draw is no problem. Same voltage and size is real good. The only question I would have is: "Do they move the same amount of air?" See if there is a CFM rating anywhere and make sure it will do the cooling job. Ray
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200309181458.46612.ray>