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Thread: Cable capacitors, pros/cons?

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    Default Cable capacitors, pros/cons?

    From what I understand that the capacitors are there to help with voltage regulation.
    But I'm wondering if there are any other pros/cons to such an implementation? Aside from the more obvious possible flexibility issue of the cable itself.

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    Quote Originally Posted by somerandomguy View Post
    From what I understand that the capacitors are there to help with voltage regulation.
    Then you understand wrong.

    They're there for ripple suppression.

    The further you move the capacitors from the load (like the CableMod cables have them in the MIDDLE of the cable), the less effective they are.

    But we're talking a very small amount of filtering. You could take them off altogether. For example: Full load on the RM1000i's +12V, you're looking at 17.5 mV with the caps vs. 25.9 mV without.

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    Voltage regulation (and load regulation) is helped by extra vsense wires in the cables, rather than the capacitors.
    In-cable capacitors are there to lower the ripple and noise.

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    Quote Originally Posted by somerandomguy View Post
    Aside from the more obvious possible flexibility issue of the cable itself.
    Only that

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    They are also slightly bigger and more expensive.

    Also there is still the possibility (though small) of them - especially those GP crapxons - going bad in time and making the unit not start or something.

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    I'm waiting for the day they put caps like these between the cables:
    http://www.jonnyguru.com/forums/showthread.php?t=13031

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    Quote Originally Posted by Behemot View Post
    Also there is still the possibility (though small) of them - especially those GP crapxons - going bad in time and making the unit not start or something.
    Highly unlikely. If the capacitor doesn't short just ripple&noise will be slightly higher. I cut off some of the cable caps to check.

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    Quote Originally Posted by ridgid13579 View Post
    I'm waiting for the day they put caps like these between the cables:
    http://www.jonnyguru.com/forums/showthread.php?t=13031

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    Quote Originally Posted by Philipus II View Post
    Highly unlikely. If the capacitor doesn't short
    Which is what may happen, why not.

    With having just artifical, mostly resistive load on the unit, most ripple is coming from inside so there, these caps are the last one to filter that. While in reality, they will see most of the high-frequency shit from graphics, CPUs etc. So they may die sooner than one would expect…GP cap is not really good for that…

    ridgid13579: there are some limits of what you may connect to SMPS so while it seems nice, it may just not work at all.

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