On 2021-08-22 9:41 a.m., tomas@tuxteam.de wrote: > On Sun, Aug 22, 2021 at 09:03:51AM -0400, Polyna-Maude Racicot-Summerside wrote: > > [...] > >> Like I already wrote, modifying voltage doesn't change speed of a motor >> (fan). > > I disagree. The thing poses [1] as a DC motor (2 pins power, one tacho). > I don't think you get too much control over RPM, but putting the tacho > in the control loop should be possible. > > I have no idea what the motherboard/fan manufacturers actually do, though. Yes it is possible to modify speed of a motor by varying DC voltage. But this is not the case in the present situation. > > Cheers > > [1] I'm nearly certain it's a BLDC in disguise, with some electronic goo. > > - t > -- Polyna-Maude R.-Summerside -Be smart, Be wise, Support opensource development
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