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Heatsink/ Heat Pipe / ThermoSiphon Cooling The cat will only make the mistake of putting its paw by your HSF once. :) Also the place to discuss the new high end heat pipe goodness. |
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04-22-2003, 12:11 AM | #1 |
Cooling Savant
Join Date: Nov 2002
Location: portugal
Posts: 635
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fan controlers
i have a fan thats still a bit noisy with 7 volt.
with 5 it wont spin up. is there a way to build a fan controler that instead ov voltage, it controls the rpm? would it be hard? my idea is: build a circuit that sends impulses of 12 volts, so that it starts up, but never reaches high speeds, because they are only impulses. |
04-22-2003, 03:09 AM | #2 |
Cooling Savant
Join Date: Mar 2002
Location: North Vancouver BC
Posts: 234
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If you're going to build a circuit why not just build one that gives you about 6V ? Worried that's still too much?
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"mooooo" said the cow. ERTW - UBC P4 2.4B @3.01Ghz 167FSB :: Abit IC7 :: 2x256MB HyperX PC3700 :: ASUS 9600XT :: WD Raptor 2x36GB RAID0 |
04-22-2003, 10:25 AM | #3 |
Cooling Savant
Join Date: Jun 2001
Location: Desert City in California
Posts: 631
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You will have to look, but there is already a circuit that does that. I believe some of the LCD's that have fan controllers have em. I'll look around when I get home from work.
You could always go with a Rheobus (I think they go as low as 5 volts, not sure though) BrianW
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Water Cooled Inwin Q500 (Dual Rads: Rad1 = DTEK Pro Core | Rad2 = Blick Ice Estreme, Hydor L30, Dangerden Maze2, Bay Res Typhoon Reservoir, 1/2 " DD Tygon Thick Wall Hose). Flow: Res, Pump, CPU watervlock, Y into both rads, both rads into res independently. Athlon XP 1800+ (@ 1731 - 150mhz fsb.), on a Asus A7N266-c, and a Radeon 9000 *waiting for RMA'd Saphire 9800 ultra from Newegg) |
05-04-2003, 03:23 AM | #4 |
Thermophile
Join Date: Jun 2001
Location: The deserts of Tucson, Az
Posts: 1,264
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SVC sells some nice ones. I bought the Zalman baybus, but I'd probably get the Vantec instead.
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05-10-2003, 06:10 AM | #5 | |
Cooling Neophyte
Join Date: Nov 2002
Location: Colorado
Posts: 34
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Quote:
Update: Found the article here enjoy
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Fix reason firmly in her seat, and call on her tribunal for every fact, every opinion. Question with boldness even the existence of a God; because, if there be one, he must more approve of the homage of reason than that of blindfolded fear. -Thomas Jefferson Last edited by punish3r; 05-10-2003 at 06:19 AM. |
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05-10-2003, 07:22 AM | #6 |
Cooling Savant
Join Date: Feb 2002
Location: Dayton, Ohio
Posts: 836
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its true that fans often wont start up on 5 volts, but once they are started they will run on 5 volts. start em on 12, then dail them down to 5.
also, procooling just posted a preview of a PWM fan controller that you can read here if you havent already. |
05-10-2003, 08:21 AM | #7 |
Cooling Savant
Join Date: Oct 2002
Location: Louisiana
Posts: 174
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In referance to my PWM controller, that was the problem we found with the first proto type, it wouldnt start several models of fans. This was fixed in the final prototype and in in the production model. The problem was not all fans like PWM stutter voltage some took over 9 volts to get them going then you could throttle them back to around 5 volts. My circuit buffers the PWM spikes so that the signal is alot smoother and the fans will start at lower voltage without the normal PWM stutter.
Just food for thought Aardil |
05-10-2003, 10:05 AM | #8 |
Cooling Neophyte
Join Date: May 2003
Location: N Ireland
Posts: 12
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I bought this:
I got it from www.coolputer.fi/ under the modding section there are 4 items called 'Speedlimit' for 2 or 4 fans. The Speedlimit 4 (LOPPU) is a kit with all components and a PCB for you to solder together (thats the one I bought). The non-LOPPU version is pre-built and costs twice as much. They do world wide shipping. What I like about it is that on Booting the pc, the fans run on full voltage for a couple of seconds, then throttle back to whatever setting you have on the Pots. You can also fine-tune the pots so that they wont dial down below a minimum voltage. I currently run the following config: POT 1: CPU Fan Coolermaster HHC-001 - 7000RPM Max (rpm monitoring still attatched to MOBO) POT 2: 120mm fan on side panel POT 3: 2X 80mm intake fans POT 4: 2x 80mm outtake fans FuRy |
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