Re: using low voltage on DC fans

Steve Haas


>>>>> I am using an ATX power supply for my Tortise switch machines.  I have a number of 3.3 VDC and 5 VDC wires that at present are not being used.  Can I use 3.3 or 5 VDC on 12 VDC fans without damaging the motors in the long run?  They run okay, a bit slower than when on 12 VCD of course. <<<<<




You’ll be fine.  What you propose to do is roughly the equivalent of running a good old fashion 12 DC motor in an old Athearn engine at somewhere around  27% and 42% of full throttle on that old Power Pack you got with that first train set so many years ago.


Best regards,




Steve Haas

Snoqualmie, WA

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