Using two fan connectors for one fan

**blueblib** · March 10th, 2010, 07:46 PM

I have a fan that exceeds the rated power usage of a fan connector on the mobo. However I have two free fan connectors. If I connect the fan to both connectors, will it short circuit or can it double the available power?

**DoubleK** · March 10th, 2010, 10:29 PM

Just use an adapter and hook it into your power supply. The downside is you will not be able to detect and adjust it.

What the heck kind of fan did you purchase that exceeds the mobo specs? Link? Cpu fan?

**blueblib** · March 10th, 2010, 11:37 PM

I said fan for simplicity's sake, but I want the computer to adjust the voltage on a fan controller which holds several high performance fans. I've been trying to get a hybrid of manual and automatic fan control. Speedfan doesn't work for some reason. So I was wondering if I matched up the 12v and the ground wires from two fan connectors and hooked that up to the device, if it would power it properly of if there would be any danger to the mobo.

**stroyal** · March 10th, 2010, 11:56 PM

The fan power on the motherboard probably come from the same header anyway, and why take a chance, there is no advantage over using the power supply.

You can also power the fans with 5v and 7v if you want to slow them down, without a fan controller. Red to black is 5V and yellow to red is 7v, yellow to black is 12v
All a fan controller does is reduce the voltage anyway.

**DoubleK** · March 11th, 2010, 12:50 AM

I think this is exactly why case manufacturers came out with all of those fancy cases with the independent controllers.

Sigh, I wish I were a millwright! The Nuke business is booming.

**stroyal** · March 11th, 2010, 10:42 AM

Originally Posted by DoubleK

I think this is exactly why case manufacturers came out with all of those fancy cases with the independent controllers.

Sigh, I wish I were a millwright! The Nuke business is booming.

Unless you are retired, then nothing is booming.

When I retired, it was the Gas Turbine business, that was booming.

**thephilosophizer** · March 11th, 2010, 03:15 PM

Gas turbines are still going strong here in new england. DOER just permitted two in my county, plus, my campus is putting in a new gas turbine driven cogen system next year (albeit a much smaller one).

**DoubleK** · March 11th, 2010, 03:57 PM

I think President Obama's new commitment to 3 billion in subsidized loan guarantees for each (new?) nuclear power plant has the industry buzzed.

My niece (astrophysics) finally found employment with a company in Southern Illinois that designs and manufacturers reactor components. Seems they needed an applied mathematics brainiac. Sure am gonna miss her but financial aid waits for no one. My brother has been very busy in the local nuke plants, who knows maybe its just the cycle of the business. I want to hope for some change

To the op sorry to drag your post off topic did you get your fan quandary in order?

**stroyal** · March 11th, 2010, 05:07 PM

Originally Posted by thephilosophizer

Gas turbines are still going strong here in new england. DOER just permitted two in my county, plus, my campus is putting in a new gas turbine driven cogen system next year (albeit a much smaller one).

University of New Hampshire Durham just put one in, along with a pipe line to a huge landfill in Rochester. They burn methane, that comes out of the landfill, along with the landfills 2 turbines.
When I retired 7 years ago almost all the new gas finds had been sold to power companies, and gas turbines that couldn't be built fast enough and had been selling at a premium, where being sold back to manufactures for pennies on the dollar, because there was no gas left

I know of a plant that used to sell their gas, instead of running their turbines, because they could sell the gas in the winter for more than the electricity, with no wear and tear on the equipment.

The company I worked for, maintain 90% of the GE turbines in New England and the northeast.

Just keeping the post warm for the OP.

**DoubleK** · March 11th, 2010, 08:56 PM

Funny that you mention engines and generation sets that turn digester gases into electricity.

I worked for Waukesha Engine last year after my "cushy" Automotive parts job dried up. After 16 years making the mighty Suburban it was a welcome job change. It was unfortunate that the oil and gas markets dropped out seemingly overnight and I was layed off after only 5 months. Course as a Millwright you know the feast or famine rule.

Just sucks that oil prices were a double edged sword for me. Glut of cheap oil had me working min. 50 hour weeks from 1990 - 2000, people loved their Suburbans. Oil went through the roof and people realized 12 miles to a gallon wasn't a good idea, there went that job after 16 years. Brush self off get new job and skip severance to take new opportunity and essentially work for free for 5 months when oil prices drop out and demand for oil shrinks. Lose that job and restart all over again.

When life deals you lemons just add Absolut!