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Why Raise Capacitance in Smoothing Caps?

MITEE

May 16, 2022
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May 16, 2022
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I watched a vid the other day and the guy changed the main smoothing caps from 6800uf to 10,000uf.

What is the reasoning for doing this, and what are the instances in which you wouldn't do such a thing?
 

Martaine2005

May 12, 2015
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May 12, 2015
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One reason could be to further smooth the ripple. Especially under load.


Martin
 

CircutScoper

Mar 29, 2022
300
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Mar 29, 2022
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One reason could be to further smooth the ripple. Especially under load.


Martin
Yeah. Ripple. Smoooooth!

latest
 

danadak

Feb 19, 2021
268
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Feb 19, 2021
Messages
268
If you raise cap values :

1) Time to discharge when powering off increased.
2) Surge current on power up increase. More stress for other components.
3) Ramp up time at power on increased.


Regards, Dana.
 

bertus

Moderator
Nov 8, 2019
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Nov 8, 2019
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Hello,

Have a look at this picture:
unit12_capacitor change.png

More info in the attached PDF.

Bertus
 

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