PS5电流声？

arsenalgear

不是电流，把风扇按住或者拆了就没声了

zkbskcwi

big-eblis 发表于 2021-1-10 14:25
这是安规电容啊？这玩意也会叫？
这个电容剪掉都不影响使用的

这是老外的解释  附机翻：
The buzzing in a foil capacitor is down to electrostriction - which is movement of the insulating films caused by the electric field as it passes through the capacitor.  It is harmless, apart from being annoying.  If you wanted to reduce this buzz, you could replace your foil capacitor with one rated for a much higher voltage.  A capacitor rated for a higher voltage will have thicker insulating films - which will need a higher force (voltage) to make them buzz.  A higher rated film capacitor should, therefore, be quieter compared to a lower rated one capacitor under the same voltage conditions.
箔式电容器中的嗡嗡声可归结为电致伸缩-电绝缘是电场通过电容器时由电场引起的绝缘膜的运动。 除了烦人之外，它是无害的。 如果您想减少这种嗡嗡声，可以用额定更高电压的铝箔电容器来代替。 额定电压较高的电容器将具有较厚的绝缘膜-这将需要较高的力（电压）以使其嗡嗡作响。 因此，在相同电压条件下，较高额定值的薄膜电容器应比较低额定值的电容器更安静。

As you probably know a certain level of "coil whine" is inevitable in electronic systems. This is simply a function of current passing through the component causing vibrations. To negate coil whine in foil capacitors (or any other wound component for that matter) manufacturers have to roll the materials extremely tight with very precise tolerances, otherwise any non-uniformity between the coil and dielectric layers will cause an audible resonance.
My guess is the supplier Sony is using for this particular capacitor is either having a QC issue or for cost reasons isn't manufacturing with extremely tight tolerances. (I'm personally leaning towards the latter one).


如您所知，在电子系统中一定程度的“线圈鸣叫”是不可避免的。这仅仅是电流通过组件引起振动的函数。为了消除箔式电容器（或与此相关的任何其他缠绕组件）中的线圈啸叫，制造商必须以非常精确的公差将材料压得非常紧，否则线圈和介电层之间的任何不均匀都会引起可听见的共振。
我的猜测是，索尼为此特定电容器使用的供应商可能存在质量控制问题，或者出于成本原因，制造商的公差并不严格。 （我个人倾向于后者）。

big-eblis

zkbskcwi 发表于 2021-1-10 16:02
这是老外的解释  附机翻：
The buzzing in a foil capacitor is down to electrostriction - which is mo ...

哦
类似陶瓷电容的叫声
我还真没注意过安规电容的材质