Fire hazard? Need advice PLEASE!

I just realized that my PC fans say 12V and the DC power charger that I'm using says 9V. Is this a fire hazard?

Not short term, but it is working your power supply to it's limit, and it will not last as long as one rated correctly for the load.
I bet if you feel the transformer, it is pretty warm, and the fan is not turning at it's max RPM's.
Also, you should have a power supply, not a charger, like for a phone or something.
The supply is made to have a constant load on it.

Yes it is running very hot! I should also note that it is not a phone charger, but a power supply. Thanks for the advice.

most pc fans run at 12v DC.

youll be fine to run as many fans as you want as long as your adapter can support it.

im running 6 fans off of 1 adapter right now @ full speed

anotherjustban said:

I just realized that my PC fans say 12V and the DC power charger that I'm using says 9V. Is this a fire hazard?

Click to expand...

No.
By running your fans at less than their rated voltage, they will be running SLOWER than max speed.
So they'll be much quieter, but they'll move less air.

The overload/fire hazard risk comes into play if you overload your transformer.

What matters is the current draw from your fan compared to the rating on the transformer.

In other words, if you attach 20 fans, each drawing 0.5 amps (for example) to a 12V DC transformer rated to deliver only 3 amps, you'll overload the transformer.

It will probably just burn out, but yes, it could overhead and pose a fire risk.

In your case, I strongly doubt you'll be overloading any normal transformer with one really low-current draw 80mm computer fan.

what jogro said.

the charger will only deliver 9v worth of power to a fan that could use more power. your main worry is how many amps the fan takes up and how many amps the charger is rated for.