Connecting 2 12v fans

[L1ph70u]

I am connecting both fans parallel to the 12v DC source, where usually the standard fan is connected. So imagine just the xbox with 1 fan like i bought it and I just connect another one to the same 12v Plug where first was one

 

[DPG]

I am connecting both fans parallel to the 12v DC source, where usually the standard fan is connected. So imagine just the xbox with 1 fan like i bought it and I just connect another one to the same 12v Plug where first was one

So you are 100% sure that the connector is giving a steady 12VDC out then? I did ask this a while ago but you didn;t seem sure then.

 

[L1ph70u]

fans in computers are not always driven at full speed, the speed is controlled by the computer either by regulating the voltage or pulsing the voltage on and off at many times per second (pwm).

it measures the temperature of the air inside the case and the cpu, calculates the amount of cooling required and speeds up or slows down the fans to control the temperature as required.

if you believe that things are running to hot, then it is most likely a temperature sensor either dislodged or faulty.
by fitting 2 fans doing the same job, I would expect them to run slower than a single fan as the controller is slowing them down as there is plenty of cooling happening.

are you concerned that it is running to hot?
adapting computers without fully understanding what you are doing can have the opposite effect of what you are trying to achieve.

I dont know wether I said it before but I didn't connect the tac or sensor wires. just + and - of the fans

 

[DPG]

So your fans are 3 wire fans?

 

[L1ph70u]

So your fans are 3 wire fans?

No , 4 Pin PWM. I thought I said jt before I'm sorry if I forgot to say that.
I know how to connect them to run on 5V 7V and 12V. I choosed 12V for both.

 

[DPG]

I might have misunderstood. I thought these were standard 12VDC fans.

 

[L1ph70u]

Does someone know if on the package of the fan is: rated current: 0.29A .
Is that the consumption meant at highest speed?(at highest RPM)

 

[L1ph70u]

Hello, I had a thread already where I wanted to know wether I could connect 2 Fans to 1 supply.

But now I have another problem.
I wired them parallel( + and - together of both fans into one plug).


How could I now check the voltage on each fan
with a multimeter?
to see what every fan gets.

Thanks for reply

 

[Lucien Nunes]

If they are in parallel they will both receive the same voltage, which is the voltage of the supply.

 

[DPG]

I did try to explain this in the other thread, but I don't think I succeeded.

 

[Marvo]

Hello, I had a thread already where I wanted to know wether I could connect 2 Fans to 1 supply.

But now I have another problem.......

The new thread you started is about testing the same fans you were connecting in your original thread so I've merged both threads into one to prevent confusion.

 

[Milo81]

why not attach a laptop cool pad from currys or something, they usually have 4 12v fans and can either be USB or mains.

 

[Spoon]

why not attach a laptop cool pad from currys or something, they usually have 4 12v fans and can either be USB or mains.

You can buy fans for the Xbox One that plug into a USB connector on the Xbox.
It looks like the OP is determined to plug two fans into a connector that may have been designed just for one.

 

[L1ph70u]

I did try to explain this in the other thread, but I don't think I succeeded.

I understood it, so you suceed.
But I recognized, that one fan is spinnging 50% faster so it made me think about that they don't get the same Voltage.

 

[L1ph70u]

You can buy fans for the Xbox One that plug into a USB connector on the Xbox.
It looks like the OP is determined to plug two fans into a connector that may have been designed just for one.

yes you are completely right