Re: Power supply build quality pictorial. part 2
A lot of PSUs like that use 200v rated capacitors for primary filtering. I don't know why they've used 280v ones. It should be fine, as long as your rectified line voltage doesn't exceed their rating.
A slightly higher capacity probably won't be an issue, but you will get a larger inrush current because of them. This will mean more strain on the NTC thermistor, which may or may not need to be up-rated at the same time. The fuse may also need a slight increase in value. Depends on how tight they've got their tolerances. For a PSU that cheap though, there probably isn't much margin already.
In any case, that looks like quite a horrible PSU, and there may well be additional reasons why its hold-up time could be quite low, such as the secondary output capacitors, the circuitry for generating the POWER_GOOD signal, and maybe even the 5vSB rail.
A lot of PSUs like that use 200v rated capacitors for primary filtering. I don't know why they've used 280v ones. It should be fine, as long as your rectified line voltage doesn't exceed their rating.
A slightly higher capacity probably won't be an issue, but you will get a larger inrush current because of them. This will mean more strain on the NTC thermistor, which may or may not need to be up-rated at the same time. The fuse may also need a slight increase in value. Depends on how tight they've got their tolerances. For a PSU that cheap though, there probably isn't much margin already.
In any case, that looks like quite a horrible PSU, and there may well be additional reasons why its hold-up time could be quite low, such as the secondary output capacitors, the circuitry for generating the POWER_GOOD signal, and maybe even the 5vSB rail.
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