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Is it safe to use a laptop charger to power two parallel 24v fans? (discuss.tchncs.de)

submitted 1 year ago by chrischryse@discuss.tchncs.de to c/askelectronics@discuss.tchncs.de

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I have a 3D printer and have a special filter that has two 24V blower fans that are connected in parallel. Unfortunately my printer doesn't have the proper connectors for the fans. So if I purchase something like this power jack adapter I know the adapter is 12V not sure if that would make a difference. Anyway if I connect the female part of that adapter to the fan cables and plug in my laptop charger which is rated for 19v to 24V would that be ok?

If those adapters are fine, should I just purchase 12V blower fans instead?

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[–] Rolive@discuss.tchncs.de 1 points 1 year ago

Yeah don't worry about it. Running a fan at a lower voltage than it's meant for will result in slower fan speeds and a longer lifetime. Compared to the wattage an actual laptop will draw this is absolutely nothing. I power my soldering iron with an old laptop charger without issues.

Those plugs are generally used in 12V systems but they can handle higher voltages too. It's the current you need to be mindful of for the most part, they can overheat if you try to power a space heater or something from that but a few fans won't cause any issues.