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Apakah Penggemar Komputer Selalu Berlari 100% Kecuali Dikatakan Lain?

Apakah Penggemar Komputer Selalu Berlari 100% Kecuali Dikatakan Lain?

Geoffrey Carr

Baik di laptop, desktop, atau bahkan konsol game, kita semua mendengar desingan dari penggemar sistem di latar belakang. Bagaimana sebenarnya semua penggemar pendinginan kecil ini tahu kapan harus berputar, turun, dan jika tidak, memoderasi jumlah udara yang mereka pindahkan?

Sesi Tanya & Jawab Hari ini hadir untuk memberi kami hak milik sub divisi SuperUser—a Stack Exchange, pengelompokan situs Q & A berbasis komunitas.

Pertanyaan

Pembaca superUser darkAsPitch bertanya-tanya:

What happens if I do not plug it into the motherboard and it does not have a switch?

I have seen fans before with an “off/low/high” switch that allows you to manually set their speed.

I have seen fans that plug into the motherboard and are controlled by the OS.

I am curious… what does a fan do by default when plugged into a PSU? Does it run at 100% unless otherwise told to go slower? This is what I would expect…

Jadi bagaimana cara kerjanya? Full bore kecuali diperintahkan lain?

Jawabannya

Kontributor SuperUser Journeyman Geek menawarkan wawasan berikut:

Well, kind of. Fan speed control is done by varying voltage or through Pulse Width Modulation (using a constant voltage and cutting it up into pulses to vary speed). If you’re plugged into a motherboard, that’s what it does. If it has 3 wires, the third wire tells the motherboard what’s the speed the fan is running as. If you have a 4th wire, fan speed control is done via PWM rather than voltage control.

You can plug in a 2 wire fan to a 3 or 4 wire connector (though you lose speed feed back), and a 3 wire to a 4 wire connector (where you lose PWM control). You can also use a fan controller to control speeds.

Else, assuming the power source is unaware it’s a fan (as it would be connected through molex for example), and is at a fixed voltage, yes, it goes at full speed all the time.

Kontributor rekan Hyperslug menyoroti bagaimana pengecualian dimainkan:

Like the other guys said, pretty much yes, but I can think of 3 exceptions:

1. A few fans have a built in thermistor that will adjust speed depending on temperature.

2. PSU’s with specially marked Fan-Only PSU connectors (Antec TruePower 550W) can adjust the speed of the fan:

3. If you plug it into the PSU molex using the 12/5 volt rails (7 volt) or 12/7 rails (5 volt) it’ll be run slower, but at this point you’re modding.

Dan di sana Anda memilikinya: di luar kendali eksternal oleh beberapa mekanisme (baik itu input motherboard, termometer kasus, atau PSU yang cerdas), penggemar akan berjalan pada kecepatan tertinggi yang dimungkinkan oleh sumber daya.


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