[TriEmbed] laptop fan motor control question

Carl Nobile carl.nobile at gmail.com
Tue Feb 2 12:24:14 CST 2021


>From the label, it looks like a brushed motor which would be much easier
than a DC brushless motor however brushed motors only have two wires, the
third may be a sensor wire to the control circuitry in the laptop could
change the speed of the motor.
With that said, you would just need a 5V DC supply to power it. If you want
it to have variable speed control you would need a PWM circuit which you
can set up with an Arduino or an RPI.
~Carl

On Tue, Feb 2, 2021 at 1:15 PM Pete Soper via TriEmbed <
triembed at triembed.org> wrote:

> I pulled a fan/heatpipe assembly out of a laptop to have for future
> experiments and wonder what sort of control I need for it's three wire
> motor connection? Here's the label on the outside. The DC resistance
> between any two pins with any polarity is much higher than I would have
> expected: thousands of ohms.
> Thanks,
> Pete
>
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-- 
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Carl J. Nobile (Software Engineer)
carl.nobile at gmail.com
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