Re: HiPro HP-P3017F3 rev:03 [Dell H057N] - capacitor repair
Quote:
Originally Posted by upgradestations
Is the fan controller a software-based controller within the PCB somewhere? It still blows my mind how complex these systems can appear, but really it's just cleverly manipulating the flow of electricity.
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In server-grade PSUs fan speed is often controlled by a microcontroller that also controls the output regulation and supervisory functions such as over-current and UVP/OVP protection.
In the case of desktop PSUs such as the one discussed in this thread, fan speed is usually adjusted using a thermistor and opamp to control the DC voltage to the fan.
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PeteS in CA
Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
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