Are these fans polarity protected? For my application I need to reverse the direction using an h-bridge.
1025226
Do they have a plus and minus wire? Yes they do and normally are connected as such to the small connector. Being a designer, I don't know "all" the circumstances around what you are doing. If you are asking if you just reverse the hookup of the wires, will the motor run in reverse? I would say the answer to the question is no. Easiest way to accomplish that would be to turn the fan over, 180 degress.
1278962
Not that I'm aware of. The 3 pin connectors are keyed to fit only one way. You could always flip the fan over. But I'm not sure what or how its applied for your project.
2197489
I don't think so, fans are designed to suck air through one port,unless fan is reversible,do what I did and buy longer inlet ductwork.
474261
It's been a while since I built that PC as a gift to a relative. IIRC, those fans have molex power connectors, meant to attach directly to your power supply, not your motherboard.
690504
Yes. The fan's speed will not be controlled by the onboard controller, rather the selection made on the switch. I would imagine the function is limited to the fan's controller b/c should the mobo controller drop the speed, while low/silent is selected, the fan may not receive enough juice to turn. If you're using several fans this is nice b/c even on molex the fans will be functioning at similar speeds w/o purchasing a controller, flipping the 5volt to 3volt or howling at higher rpm's.
958564
I can't answer, I threw them away after reading from a few reviewers that the polarity is switched (neutral and common wires are backwards.) I suggest you seek out an alternate item just to be safe.
1836585
I have a question can you change polarity coming to the device and how will it affect the power coming out my application is 12 volts into the device and ?? out also what kind of speed control can I expect
2274940
Should work fine. The horizontal fans in my various cases haven't had issues.
1004798
Yeah I had that in my fan info too. But the info with this control says not to use it with a solid state fan. Who even knows what these "solid state" things are. You should be fine.
242187
If the information states it will work with fans, then it's ok. I have never used them with fans, but I can see how they will work ok.
1517996
These are three-pin fans. You would need to control them through the motherboard or a fan controller.
934630
The hell it's not. I have this fan in my shop. You can reverse it. It came with a wall mounted switch that runs in 5 speeds FORWARD and BACKWARD. Maybe your fans didn't come with the switch mine did. You can make any fan reversible. Apparently you don't understand AC current.
1955939
The part that usually fails on these fans, albeit after about 10 yrs or more, is the bearing. My guess is that the bearing configuration is designed for vertical operation, in which case horizontal installation would affect the life of the unit. I would check first with the manufacturer or reseller, before giving up, if there isn't a practical vertical solution.
2226504
You can also join the 2 wires on the left if you have only 1 wire to connect to. Some fans have only 4 leads rather than 5.
1186536
No, the fans only have their attached 3 pin connector which can plug into a 3 or 4 on can controller on your motherboard. You will need an additional adapter to plug these fans into the power supply, likely through a molex connector.
766242
Nope, but you could use a "Silverstone Tek Sleeved PWM Fan Splitter Cable" to connect both fans t the motherboard header.
596
Yes, the three wires consist of a pos, neg, and the third wire lets the motherboard read the rpm of the fan. so just find the pos and neg and your good to go.