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Thread: How do you reduce ripple?

  1. #11
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    No shock there, pardon the pun

  2. #12
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    Hi did you get any further with the recapping yet/

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    Not yet - haven't even gotten the units to work on yet.

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    to reduce powersupply ripple, recap the secondary side with high ripple current, low ESR caps. the caps being low ESR will help greatly.

    panasonic FM series work great.


    if your having troubles finding capacitors in the proper diameter,(which is often hard is psu's) first check to see if a 12.5mm can fit where the 10mm once was, often they can. if they cant, then another thing to do is, replace the 10v caps used on the 5v and 3.3v line with 6.3v caps.

    this is only safe because the 5v and 3.3v line should never exceed 6.3v.

    this should NEVER be done on the 12v line, as using a 10v cap on a 12v line will most likely result in a quick venting.


    personally i replace all the secondary, and sometimes primary caps in my psu's with low esr caps from panasonic, nichicon, rubycon, or chemicon, depending what i can get to fit. i have found that it helps keep the voltage steady under load. i have not personally measured ripple as i do not have an o-scope, but others report lower ripple with quality caps, which makes much sense, since failed caps(when ESR shoots sky high) produces high ripple.

  5. #15
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    That's why I'm doing. Getting either Nippon/United Chemi-Con or Matsushita caps. And we know where 12.5mm will fit instead of 10mm, etc. I'm just trying to fly them in from Asia so I don't have to pay retail.

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    Quote Originally Posted by jonnyGURU View Post
    That's why I'm doing. Getting either Nippon/United Chemi-Con or Matsushita caps. And we know where 12.5mm will fit instead of 10mm, etc. I'm just trying to fly them in from Asia so I don't have to pay retail.
    Digikey has good prices. you could get chemicon caps for what you need for about 50cents each.

    or contact bigpope over at XS and he will send you some free samples of samxon. he sent me 2 dozen caps via airmail for free. if you go that way, ask if he has the GA series, its ESR is supposed to rival that of rubycon MBZ series.

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    Digikey doesn't have a single large value cap in the size specs I need - they're a last resort if JG is unable to get them from his sources. I use Panny FM and UCC KY when I can.

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    Quote Originally Posted by Oklahoma Wolf View Post
    Digikey doesn't have a single large value cap in the size specs I need - they're a last resort if JG is unable to get them from his sources. I use Panny FM and UCC KY when I can.
    Hi again, glad to see it's progressing, can I ask if you would do a set of pictures going through the various stages?

    This is something I'm really interested in because I think it's within my scope, I'm resonable with swapping components my problem is that I know next to nothing about electronics but I'm OK at following instructions, very slowly I'm picking bits up as I read more.

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    That's the plan - have a few pics already, and am just waiting on the caps. Progress is being made

  10. #20
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    anyone know about these caps-

    http://www.cde.com/catalogs/SXR.pdf

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