Is there a way to keep my fans on for like 2 min after i turn off my computer?? I have a fan that connects to my powersupply and a fan that connects to my mobo.
Kepping fans on
- Thread starter Intelman07
- Start date
- Nov 27, 1999
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Would a huge capacitor hold a charge long enough to keep his fans turning for a while after he powers down?
Well sometimes my CPU will get hotter than it is suppose to and i would like to cool it down fast so my CPU will last longer u see. I like that capacitor idea but it may not last long.
If the CPU is reaching a dangerously high temp. I'm not sure what help "cooling it down quickly" will be, but I will offer a suggestion to your query. The easiest way to keep the fans active after shutting the computer off is to have them powered from a different source and use a switch. A wall adapter that provides 12VDC 500mA should work well. The downside happens when you forget to turn the fans on next time you start your computer and destroy the CPU.
Before considering a project like this, I'd suggest you instead take a closer look at the present cooling setup. If you are concerened with the amount of heat remaining AFTER the PC is off, then it only stands to reason the temps when the computer is on are too high.
Before considering a project like this, I'd suggest you instead take a closer look at the present cooling setup. If you are concerened with the amount of heat remaining AFTER the PC is off, then it only stands to reason the temps when the computer is on are too high.
Unless you've got a water cooled system, the CPU and the HS are virtually the same temperature, and are at the same spot. This isn't like a water-cooled car engine, where shutting off the engine causes the coolant to stop circulating, so the collant stays in the engine, and fails to cool the engine.
Evadman
Administrator Emeritus<br>Elite Member
- Feb 18, 2001
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That would have to be a pretty large cap. Caps are only made to hold a charge for fractions of a second.
You could do something like I did a while ago. I has 2 PWS's in a full tower. The main was for the mobo, the other was for all the perfieals ( like fans, HD's and such ) it was controlled by a switch between a ground and the green wire. You could proibably pickup a cheap 80 watt pws form an old at system and wire that up to all your fand and have it switched. I would have it do a few auxilary fans though, not your CPU and PWS fan, as you will cook something the first time you forget. Maybe use it to power 2-3 80 mm fans.
Actually, the more slowly your CPU cools down, the longer it will last. Rapid changes in temp. (and therefore size due to thermal expansion and contraction) are hard on the CPU. Therefore letting it cool off slower will result in a (slightly) longer life.
Well my cpu gets up to 70 degrees cel. and fans shouldn't cool it down that rapidly would it? This is just a project to pass the time if it isn't possible then oh well anyways would there be a way to use a rechargeable battery to do this??
- Nov 27, 1999
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Intelman07, from your post, my guess is that you are running an AMD chip, perhaps a XP? If so, depending on your ambient temps, 70C might be a call for better cooling. Perhaps a higher CFM fan, different HS or the addition of some case fans. If you post your system specs, I'm positive we can aid your cooling needs. Hope this helps 
Well it is within a good range cause i read my manual. Well i got a p4 and decided that doing the fan thing isn't worth it. Now i am wondering if there is a way to quiet my pc without changing fans.
- Nov 27, 1999
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:Q Intelman07, you've got those type of temps w/ a P4??? From what I've read, that high for a Pentium 4
!!!
unless you oc'd your 1.6 to 3.2...70c is very high! in fact, its the maximum warning temp in the bios! and at 80c, your cpu shuts itself down! get an ax478 asap!
unless you oc'd your 1.6 to 3.2...70c is very high! in fact, its the maximum warning temp in the bios! and at 80c, your cpu shuts itself down! get an ax478 asap!
Hehe i fixed it nope highest i get is 50 i had my monitor driver wrong lol don't ask long story and my system temp gets to 35.
Still leaves the question i would like to make my pc quiet without changing fans could i like vent the exaust to the back or something. You see i am a 13 year old kid here so i can't go to sites and buy stuff with a credit card and me dad doesn't think i need "quiet" fans or stuff so i wonder what options i have.
hey i'm only 8 years old...
i don't think it'll hurt to remove one of the exhaust fans (if you have more than 1)...but definitely keep at least 1 exhaust and 1 intake
I have no exaust just my powersupply drawing out the air. I have 1 intake. I am just bored with my comp lol.
If anyone still wants to know if there is anything to keep the fans on after shutdown, see here
The IOSS Cooling After unit is a nifty little device that performs the same function for your computer that a turbo timer does for a turbo car -- after shutdown, it will keep your fans running for 1, 3, 5 or 10 minutes in order to rapidly cool your system.
The basic idea here is prolonging the life of your PC components. As you know, heat is a PC's worst enemy. When you turn off your PC, the CPU, hard drive, memory, power supply and many other components will still be radiating heat. Since your fans are off, this heat has nowhere to go, so it lingers inside of your case.
With the Cooling After, you can safely and automatically cool your PC after shutdown. The CA plugs into a Wake On Lan (WOL) header, which is standard on many motherboards. It draws power from this header to power up to 2 fans -- usually an exhaust case fan and your CPU Cooler fan. You can set the cooling interval yourself, generally 3 minutes is suitable to cool most PCs. After that, the CA does everything else by itself.
The IOSS Cooling After unit is a nifty little device that performs the same function for your computer that a turbo timer does for a turbo car -- after shutdown, it will keep your fans running for 1, 3, 5 or 10 minutes in order to rapidly cool your system.
The basic idea here is prolonging the life of your PC components. As you know, heat is a PC's worst enemy. When you turn off your PC, the CPU, hard drive, memory, power supply and many other components will still be radiating heat. Since your fans are off, this heat has nowhere to go, so it lingers inside of your case.
With the Cooling After, you can safely and automatically cool your PC after shutdown. The CA plugs into a Wake On Lan (WOL) header, which is standard on many motherboards. It draws power from this header to power up to 2 fans -- usually an exhaust case fan and your CPU Cooler fan. You can set the cooling interval yourself, generally 3 minutes is suitable to cool most PCs. After that, the CA does everything else by itself.
Here is another one called "PC Mods Power Down Protector "
http://www.systemcooling.com/modules.php?name=News&file=article&sid=145
http://www.systemcooling.com/modules.php?name=News&file=article&sid=145
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