this post was submitted on 29 Oct 2023
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Is it safe to use a laptop charger to power two parallel 24v fans? (discuss.tchncs.de)
submitted 2 years 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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[–] sj_zero@lotide.fbxl.net 10 points 2 years ago

Parallel means that the voltage doesn't get divided. If you connect two 24v fans in parallel to a 19v charger, then both fans will get 19v. They might run a bit slow since the voltage will be lower than expected, but it'll be ok I think.