Anonymous asked in Computers & InternetHardwareLaptops & Notebooks · 9 years ago

How are thermistors used in laptop fans? Best answer chosen today!!!?

I need help understanding how the thermistor enables the laptop fan to work

and is it a NTC or PTC thermistor that is used?

Best answer will be chosen today!

1 Answer

  • Ajax
    Lv 5
    9 years ago
    Favorite Answer

    There are no thermistors inside laptop fans, however there is both NTC and PTC termistors on the mainboard. An NTC therimistor on the mianboard is used to turn on and off the laptop's fan. A PTC termistor is used on the power circuit and will automatically fuse off the system if overcurrent is detected. These aren't great termistors and overcurrent can still fry a mainboard.

    Source(s): 20 years experience certified IT pro
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