Reducing ripple voltage

[new2019]

Hey guys , I read some reviews about my Silverstone ST1500W and it seems to have ripple voltage. Some say its bad for mobo and other components .
Is there a way to reduce it to minimum by replacing parts on psu ?
Any advice ?

[budm]

Re: Reducing ripple voltage

How high are the ripple voltages? Are they higher than the spec? Power supply will always has ripple voltges because the capacitors will always be charged and discharged.

[new2019]

Re: Reducing ripple voltage

I'm not sure if they are in spec , but in specs it says 120mV and 50mV .
If I recap with very good ones will it reduce the ripple voltage ?

one more thing: will it be a problem if I replace a irfb3206 mosfet with irfb3207 mosfet ?
the irfb3206 is for 120A and irfb3207 is for 130A , can it increase the output of my powersupply ? or can it damage my psu ?

[mariushm]

Re: Reducing ripple voltage

Recapping doesn't guarantee lower ripple. Ripple is a combination of capacitors, pi filter on output, how fast the psu reacts to changes in output current and other factors.

Changing mosfets doesn't change the power supply performance, won't make power supply more capable.
That Amps rating of mosfets is somewhat meaningless for power supplies, doesn't mean the power supply will be capable of more amps if you replace the mosfet.

[new2019]

Re: Reducing ripple voltage

Thanks mate for clearing that out . I thought if I replace the mosfet it would do better .
What is really responsible to give higher out put ?

[LLLlllou]

Re: Reducing ripple voltage

Thanks mate for clearing that out . I thought if I replace the mosfet it would do better .
What is really responsible to give higher out put ?

Whatever the weakest link is, usually the input switcher(s) or the transformers.

[budm]

Re: Reducing ripple voltage

It sound to me that you do not have the equipment to make the proper measurement.
Wrong value, type of capacitor can cause power supply to become stable. Same for other active components. You have to be able to measure the DUT before and after modification to see what it becomes.
You should do more study and look into the matter more.
BTW, for example that the transformer is rated at 10VA, you're not going any more VA than the transformer can handle, and if you drive the transformer too hard, the core will saturated, the inductance will drops and you will see magic smoke.
http://e2e.ti.com/support/power_mana...ge-ripple.aspx

https://cdn.badcaps-static.com/pdfs/...c2d95d3787.pdf





http://www.hardwaresecrets.com/article/181

https://cdn.badcaps-static.com/pdfs/...18fa07ffd4.pdf

[new2019]

Re: Reducing ripple voltage

Yea , I dont have the correct tools so I have ordered them now.
Oh il refrain from doing that lol I dont want to overstress my psu.
Thanks for those links .

ALso you guys are real helpful , thanks for that .
I'l give my maximum effort to fix this .