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Fan Controller not powerful enough?

T

Trackr

[H]ard|Gawd
Joined
Feb 10, 2011
Messages
1,786
I bought a standard fan controller online for my Delta fan.

Now I read the back of the packaging and it says "Max output 700mA" and "Max 8.4W".

My Delta fan is twice that.. should I return it or open it and try it out?
 
drescherjm said:
Get a fan controller that is rated for the current that the delta fan uses.
Click to expand...

This. Most fan controllers list in their specs the amount of watts they can handle per channel. Do the proper research to get what you need.
 
Tsumi said:
This. Most fan controllers list in their specs the amount of watts they can handle per channel. Do the proper research to get what you need.
Click to expand...

We're talking 24 watts here.. I haven't found a single controller capable of that.

If I connect it to the 8w controller, it will just fry it? I need to know before I send it back.

Also, an idea occurred to me; since the manufacturer's page for my Delta fan says that it should function under 7-13.2v, what if I undervolt it to 8.7v..

As in, use the 7v trick but with the 3.3v wire instead of the 5v. What do you say?
 
Trackr said:
We're talking 24 watts here.. I haven't found a single controller capable of that.

If I connect it to the 8w controller, it will just fry it? I need to know before I send it back.

Also, an idea occurred to me; since the manufacturer's page for my Delta fan says that it should function under 7-13.2v, what if I undervolt it to 8.7v..

As in, use the 7v trick but with the 3.3v wire instead of the 5v. What do you say?
Click to expand...

Really? You're not looking hard enough then. Don't look on Newegg, most of those controllers are low wattage. Look on watercooling sites like FrozenCPU and PerformancePCs. There are plenty of controllers capable of handling 30+ watts, some up to 50 watts. My Lamptron FC Touch, for example, handles 30 watts a channel, up to 6 channels.
 
drescherjm said:
A quick google search and I found several 25W and 30W per channel fan controllers.

Here is 1:
http://www.amazon.com/Sentry-Mesh-C...qid=1392155518&sr=1-4&keywords=fan+controller


Most likely.
Click to expand...

Tsumi said:
Really? You're not looking hard enough then. Don't look on Newegg, most of those controllers are low wattage. Look on watercooling sites like FrozenCPU and PerformancePCs. There are plenty of controllers capable of handling 30+ watts, some up to 50 watts. My Lamptron FC Touch, for example, handles 30 watts a channel, up to 6 channels.
Click to expand...

Ah, no. I found multi-channel controllers that are powerful enough, but I have a small space to work with. I need something single-channel and small.. you'd think it'd be easier to create a single-channel controllers capable of 30w.

Also, what about my 8.7v question? Ah, well. It looks like I will have to try it out before I get a response.

I will post back with details of what happened. Hopefully it will work so that the noise level can finally go down below 60dBA (!) :eek:

EDIT: I found a 24w single-fan controller on eBay. It's cutting it close, right? I should look for 30w..

http://www.ebay.com/itm/24W-12V-3-P...090?pt=LH_DefaultDomain_0&hash=item4612d62e02
 
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People looking for single fan controllers are rare. The 4 channel Sunbeam Rhoebus is just $9 on Performance-PCs, and typically goes for around $15-20. You can get a rheostat and make your own fan controller. Like this, for example.
 
Tsumi said:
People looking for single fan controllers are rare. The 4 channel Sunbeam Rhoebus is just $9 on Performance-PCs, and typically goes for around $15-20. You can get a rheostat and make your own fan controller. Like this, for example.
Click to expand...

No, that Rhoebus only supports 20w, so it won't help me.

And that rheostat costs 35$ (!) so obviously not what I'm looking for, though it's nice they have it working with my Delta fan model.

What about the link I provided for the 24w controller on eBay? Is it 24w or 8w..?

Also, what about my idea to undervolt it to 8.7v. I've been too swamped to try it out today.
 
You can undervolt it to 7 volts. It won't allow you any control though.

I just used the Rhoebus as an example of how cheap it is to manufacture multiple channel controllers, albeit low-wattage ones. Realize that far more people have multiple lower RPM fans than single extremely high RPM fans.

I would be wary of that controller. The specs give conflicting information, so I would err on the side of caution.
 
Tsumi said:
You can undervolt it to 7 volts. It won't allow you any control though.

I just used the Rhoebus as an example of how cheap it is to manufacture multiple channel controllers, albeit low-wattage ones. Realize that far more people have multiple lower RPM fans than single extremely high RPM fans.

I would be wary of that controller. The specs give conflicting information, so I would err on the side of caution.
Click to expand...

No, I can't undervolt it to 7v. I tried.

Hence why I am asking about 8.7v (splicing ground to 3.3v instead of 5v).

Would it work?
 
Not familiar enough with Delta fans to give you an answer about that.
 
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