Iron core chokes are usually found on mid to low-end boards these days with higher-end models using the more expensive ferrite core chokes.
铁芯电感一般用于中低端主板,高端主板则会使用更昂贵的铁素电感。
Iron core chokes are coated in a clear lacquer to prevent rust. Iron is a metal that rusts easily and this is something that’ll happen much faster when the iron comes in contact with moisture. Normally this doesn’t really happen inside a computer unless you live in a very damp climate. Even so, the lacquer coating should prevent this from happening.
铁芯电感外层涂有漆料以防止其生锈。铁是一种容易生锈的金属并且在它与水分接触后会更快的生锈。一般这并不会在计算机内部发生生锈的情况,除非你生活在一个气候非常潮湿的地方。即便如此,这层涂料也会阻止生锈的发生。
Take a look at the picture above and compare it to the first picture, see something different? Not only has the choke changed colour, but you can clearly see the rust underneath the lacquer.
看下上面的图片,并和第一张图比较一下,看到什么区别了吗?不仅仅是电感改变了颜色,你还能清晰的看到漆料下也有生锈。
Here’s another example from a different board model that shows the same rust patterns and colour changes.
另一个例子
If you thought the previous pictures were bad, then think again while observing these smaller chokes from a 12-phase motherboard.
如果你觉得上面那些图已经够糟糕了...那么想象一下12相供电的主板吧。
Here’s a close up of these chokes, notice the bubbles. We’ve never come across anything like this before and it’s fairly clear that the rust is coming from the inside of the chokes with the moisture trapped inside trying to get out.
这有些生锈电感的近照,注意那些气泡。我们从未见过这样的事情并且它十分清晰地说明了生锈来自于电感内部,是那些试图散发出来的水汽造成的。
Here’s a slightly less severe case from an AMD chipset board.
AMD芯片组的主板