230V FANS

the creature · 09-23-2001, 07:58 AM

Are the 230V fans quieter then the 12V DC fans, at the same size (120mm), rpm osv?

Where can you get suche fans?

Kevin · 09-23-2001, 02:19 PM

i THINK Radioshack sells 'em, but I don't know about all the other info...
-Kevin

redleader · 09-23-2001, 06:57 PM

No difference, they just use AC power instead of DC.

Obviously you have to be in a place that uses 230V power to use them, but they should be identical to same brand 110v fans for people in the US.

gmat · 09-24-2001, 07:48 PM

AC fans make no difference with DC fans if you consider performance / noise. Ball bearing/brushless DC motors are silent enough so AC motors (quite silent already) have no edge there.
What you'll end up with AC fans is:
good: No power drain on your PSU
bad: an AC variator is quite bulky and/or difficult to build. Must use a PWM or any 'smart' AC/AC technique... definitely not for the faint hearted.

If PSU power drain is your main concern so go for them, they're even cheaper than their DC counterpart (due to the AC motor). You can find em in the same places where you buy your usual industrial hardware.

Redleader: Look he's from Norway... They've got 230V out there

[ 09-24-2001: Message edited by: SureFoot ]

redleader · 09-26-2001, 12:34 AM

:o

the creature · 09-27-2001, 06:47 AM

It's only US and Canada that has 110V!
I didn't understand why I should bild a ac/ac
converter, since I got 230V.

Since AC fans aren't any beter then dc I'm going to chose dc, because thay got the hall-wire and I can controll the rpm easier.

gmat · 09-27-2001, 08:41 AM

Yep i meant AC/AC converter would be there to adjust fan speed.

Bollocks · 09-28-2001, 12:13 AM

Woo hoo! first post!

From my experience with 240V fans (in australia) is that they have a huge centre section (where the motor resides) and tiny fan blades.
They tend to generate much more heat than the 12V, and can make case temps jump up by a few degrees, which may not be what you want.
I have also found most of the cheaper 240V fans to be noisier unless you do go for the option of speed controllers, which just add on an unnecessary cost and effort to the system.
Not to mention that the 240V fans are generally much thicker and heavier than the 12V fans.

My 2c tho

09-23-2001, 07:58 AM	#1
the creature Cooling Savant Join Date: Jun 2001 Location: Norway Posts: 108	230V FANS Are the 230V fans quieter then the 12V DC fans, at the same size (120mm), rpm osv? Where can you get suche fans?

09-23-2001, 02:19 PM	#2
Kevin Slacking more than your weird uncle Join Date: Nov 2000 Location: San Diego, CA (UCSD) / Los Angeles, CA (home) Posts: 1,605	i THINK Radioshack sells 'em, but I don't know about all the other info... -Kevin __________________ I used to throw hot coffee all over the ass of the horse there, then whip him while he was kickin' at me. Those f***in things are crazy.

09-28-2001, 12:13 AM	#8
Bollocks Cooling Neophyte Join Date: Sep 2001 Location: Australia Posts: 54	Woo hoo! first post! From my experience with 240V fans (in australia) is that they have a huge centre section (where the motor resides) and tiny fan blades. They tend to generate much more heat than the 12V, and can make case temps jump up by a few degrees, which may not be what you want. I have also found most of the cheaper 240V fans to be noisier unless you do go for the option of speed controllers, which just add on an unnecessary cost and effort to the system. Not to mention that the 240V fans are generally much thicker and heavier than the 12V fans. My 2c tho __________________ Bollocks -------------- Celeron 466@525 stable Plans for H20 setup in HX08

09-23-2001, 06:57 PM	#3
redleader Thermophile Join Date: Jun 2001 Location: The deserts of Tucson, Az Posts: 1,264	No difference, they just use AC power instead of DC. Obviously you have to be in a place that uses 230V power to use them, but they should be identical to same brand 110v fans for people in the US.

09-24-2001, 07:48 PM	#4
gmat Thermophile Join Date: Mar 2001 Location: France Posts: 1,221	AC fans make no difference with DC fans if you consider performance / noise. Ball bearing/brushless DC motors are silent enough so AC motors (quite silent already) have no edge there. What you'll end up with AC fans is: good: No power drain on your PSU bad: an AC variator is quite bulky and/or difficult to build. Must use a PWM or any 'smart' AC/AC technique... definitely not for the faint hearted. If PSU power drain is your main concern so go for them, they're even cheaper than their DC counterpart (due to the AC motor). You can find em in the same places where you buy your usual industrial hardware. Redleader: Look he's from Norway... They've got 230V out there [ 09-24-2001: Message edited by: SureFoot ]

09-26-2001, 12:34 AM	#5
redleader Thermophile Join Date: Jun 2001 Location: The deserts of Tucson, Az Posts: 1,264	:o

09-27-2001, 06:47 AM	#6
the creature Cooling Savant Join Date: Jun 2001 Location: Norway Posts: 108	It's only US and Canada that has 110V! I didn't understand why I should bild a ac/ac converter, since I got 230V. Since AC fans aren't any beter then dc I'm going to chose dc, because thay got the hall-wire and I can controll the rpm easier.

09-27-2001, 08:41 AM	#7
gmat Thermophile Join Date: Mar 2001 Location: France Posts: 1,221	Yep i meant AC/AC converter would be there to adjust fan speed.

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